Questions on Word Problems: Miscellaneous Word Problems answered by real tutors!

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Question 1202012: If 80% of a radioactive element remains radioactive after 200 million years, then what percent remains radioactive after 700 million years? What is the half life of this element?
Click here to see answer by Theo(13342)

Question 1201962: A 2 bowl set has the following description:
The lid is interchangeable.
Weight of larger bowl: 12 oz. without lid.
With lid, larger weighs twice as much as smaller without lid.
With lid, smaller weighs one third more than larger without lid.
Calculate weight of lid.
Let A = larger.
Let B = smaller.
Let C = lid.
A = 12.
A + C = 2(B).
A = 1/3(B + C)
Not sure if set up correctly and how to solve.
Click here to see answer by MathTherapy(10552)

Question 1202032: Let p be Ricky love Lucy and let q be Lucy loves Ricky. Give a verbal translation.
a Pv~Q
b ~P^~Q
c~(P^Q)
2. Construct truth table for the following
a Pv~Q
b Pv(Q^r)
c ~P>Q<>PvQ
3.in survey of 100 students,the members various courses were found to be English 60, mathematics 40, chemistry 50 English and mathematics 30, English and chemistry 35, mathematics and chemistry 35 and courses in all three areas 25
a.how many students were taking mathematics, but neither English nor chemistry
b.how many were taking mathematics and chemistry but not English.
c.how many were taking English and chemistry but not mathematics

Click here to see answer by ikleyn(52781)

Question 1202048: Lexi has a set of five number cards. The mean of the cards is 5, the mode is 8, the median is 6 and the range is 7. Write down the five numbers on Lexi's cards.
Click here to see answer by greenestamps(13200)

Question 1202036: Let p be Ricky loves Lucy and let q Lucy loves Ricky. Give a verbal translation
a Pv~Q
b ~P^~Q
c ~(P^Q)
Click here to see answer by Edwin McCravy(20055)

Question 1202056: Bus fare to city is 2.00, there is 27 dollar coupon
Click here to see answer by Edwin McCravy(20055)

Question 1202097: There are 22 students in a music class in a school. The students in the class are either Freshmen or Sophomores, and there are 6 more boys than girls. If there are 5 Freshmen boys and 4 Sophomore girls, how many Sophomores are in the class?
Click here to see answer by ikleyn(52781)

Question 1202114: A total of 320 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was three times the number of adult tickets sold. How many adult tickets were sold?

Click here to see answer by mananth(16946)

Question 1202155: Combined, there are 192 Asians, Africans, Europeans, and Americans in a village. The number of Asians exceeds the number of Africans and Europeans by 59. The difference between the number of Europeans and Americans is 23. If the number of Africans is doubled, their population exceeds the number of Europeans and Americans by 29. Determine the number of Asians, Africans, Europeans, and Americans in this village.
Click here to see answer by josgarithmetic(39617)

Question 1202192: A Saline solution is administered by the following:
3 to 6 liters.
2 to 3.5 hr. period.
Determine amount administered in 10 min.
Check my calculations, please.
Liter = 1.0567 quarts.
Quart = 32 oz.
3 * 1.0567 = 3.17 quarts.
3.17 * 32 = 101.44 oz.
2 hrs. = 120 min.
101.44 / 120 = .084 oz.
.084 * 10 =8.45 oz.
Click here to see answer by Alan3354(69443)

Question 1202145: From a sample of 800 consumers,230 took coffee,245 took tea and 325 took cocoa.
30 took all the three beverages,70 took coffee and cocoa,110 took coffee only and 185 took cocoa only.
a. Present the above information in a Venn diagram
b.find the number of consumers who took tea only
c. Find the number of consumers who took coffee and tea only
d. Find the number of consumers who took tea and cocoa only

Click here to see answer by mananth(16946)

Question 1202242: 1 a. Solve the following triangle using sine rule.
Angle A. 75, angle B. 48, angle C. 57 find all the missing sides using sine rule

Click here to see answer by Alan3354(69443)

Question 1202245: 1a. Find the permutation from word ABRACADABRA
A. Total number of permutation of word ABRACADABRA
B. Begins with A
C. Begins with E and ends with R
D. Begins with A and ends with A
E. Does not begins with A

Click here to see answer by ikleyn(52781)

Question 1202246: Committee of 10 members is said to be chosen from 9 males and 6 females, in how many ways can this be done
A. The committee exactly 6 females
B. There's to be majority of the males
C. There are at least 4 females
D. There are at most even males
Click here to see answer by ikleyn(52781)

Question 1202266: A plane flying the 3458-mi from New York City to London has a 40-mph tailwind. The flight's point of no return is the point at which the flight time required to return to New York is the same as the time required to continue to London. It the plane's speed in still air is 840 mph, how far is New York from the point of no return?
Click here to see answer by ikleyn(52781)

Question 1202305: Our baseball team lost 15 games this season. That was 5/8 of all they played. How many games did they played this season?
Click here to see answer by math_tutor2020(3817)

Question 1202305: Our baseball team lost 15 games this season. That was 5/8 of all they played. How many games did they played this season?
Click here to see answer by ikleyn(52781)

Question 1202338: At first there were 17 boring beetles. The number of boring beetles doubled every day.
(a) Write an equation that describes the number of beetles there would be after n days.
(b) Using the equation in (a), determine the number of beetles there would be after 30 days.
Click here to see answer by math_tutor2020(3817)

Question 1202343: Brenda has a jar that contains 5 blue tacks and 7 red tacks. She draws 3 tacks at random without replacement. What is the probability that all 3 are red?
Click here to see answer by math_tutor2020(3817)

Question 1202340: Attractiveness varies inversely with the wiggles. At 300 wiggles the attractiveness is 10. What would the attractiveness be at 150 wiggles?
Click here to see answer by josgarithmetic(39617)

Question 1202345: a point moves on the parabola y^2=16x in such a way that the rate of change of the abscissa is always 3 units/sec. how fast is the ordinate changing when the abscissa is 1 unit?
Click here to see answer by ikleyn(52781)

Question 1202379: Use dimensional knowledge to solve this
x(t) = X0 + V0t + 1/2at²
Click here to see answer by josgarithmetic(39617)

Question 1202379: Use dimensional knowledge to solve this
x(t) = X0 + V0t + 1/2at²
Click here to see answer by ikleyn(52781)

Question 1202378: Find the value of (x,z,y) T = (L)x (M)y (LT-2)z
Click here to see answer by ikleyn(52781)

Question 1202403: Hi
A car driver and a truck driver started from the same place and headed for the same destination 480km away. The car set off 90min later than the truck but arrived 90min earlier. If the average speed of the truck was 60km per hour, what was the average speed of the car.
Thanks
Click here to see answer by ikleyn(52781)

Question 1202416: Reds varied inversely as yellows squared. When there were 10 reds, there were 100 yellows. How many reds were present when the yellows were reduced to 5?
Click here to see answer by mananth(16946)

Question 1202417: The seriousness of the situation grew exponentially. In fact, the seriousness S at time t is given by the equation S(t) = 3(2.71)t where t is measured in minutes.
(a) What is the seriousness at the beginning (that is, at t = 0)?
(b) What is the seriousness, rounded to the nearest hundredth, at t = 10 minutes?
Click here to see answer by mananth(16946)

Question 1202490: Maureen deposited $19,000 at 11 percent interest compounded annually.
(a) Write an equation on your paper that expresses the amount of money in the account as a function of n, where n equals the number of years since the original deposit was made.
(b) Use the equation in (a) to determine how much money is in the account at the end of n = 8 years.
(c) What was the total interest earned at n = 8 years?
Click here to see answer by josgarithmetic(39617)

Question 1202492: Inflation took its toll, and the merchant had to mark the suit up 30 percent so it would sell for $156. What was the original price of the suit?
Click here to see answer by Theo(13342)

Question 1202544: The number of birds tripled every hour. If there were 100 birds at first, how many were there in 10 hours?
Click here to see answer by josgarithmetic(39617)

Question 1202544: The number of birds tripled every hour. If there were 100 birds at first, how many were there in 10 hours?
Click here to see answer by math_tutor2020(3817)

Question 1202551: Four times the sum of twice the number and 7 exceeds the value of the number by 70. What is the number?
Click here to see answer by josgarithmetic(39617)

Question 1202549: The ratio of dullards to scholars was 2 to 17. If there were 38,000 people at the university, how many were scholars?
Click here to see answer by josgarithmetic(39617)

Question 1202549: The ratio of dullards to scholars was 2 to 17. If there were 38,000 people at the university, how many were scholars?
Click here to see answer by ikleyn(52781)

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