SOLUTION: 3.Tom missed 6 out of 54 questions on a recent exam. What percent of the test did he get right? 23. A 45 pound weight will weigh how many kilograms? (round to nearest 1/10 kg

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: 3.Tom missed 6 out of 54 questions on a recent exam. What percent of the test did he get right? 23. A 45 pound weight will weigh how many kilograms? (round to nearest 1/10 kg       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 171798: 3.Tom missed 6 out of 54 questions on a recent exam. What percent of the test did he get right?

23. A 45 pound weight will weigh how many kilograms? (round to nearest 1/10 kg if necessary)

45. The average hourly wage for hospital support staff in Washington rose last year by 2.3%. If the average wage this year is $10.55 per hour, what was the average wage last year? (round to the nearest cent if necessary)
10.If a 2 liter bottle of soda pop is used to give 5 ounce servings to children at a picnic,how many servings can be offered before the bottle runs out?

Found 2 solutions by jim_thompson5910, Mathtut:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I'll do the first two to get you started.

# 3

Percent Right = (Number he got right/total questions) * 100 = %28%2854-6%29%2F54%29%2A100=%2848%2F54%29%2A100=%288%2F9%29%2A100=0.8889%2A100=88.89


So he got 88.89% of the test questions right


------------------------------------------------

# 23

Note: 1 kilogram = 2.205 pounds (approximately)

So if you multiply 45 pounds by the fraction %281kg%29%2F%282.2lbs%29 you get





So 45 pounds is approximately 20.408 kilograms


So the answer rounded to the nearest tenth is 20.4 kilograms

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
3.)subtract 6 from 54 to get the # right then divide by 54 to get the percentage right. # of right/# possible=48/54=24/27=8/9=.888 or highlight%2888.9%29% correct
23)....the 1kg=2.205 pounds....so we must divide 45 by 2.205 and that will give us the weight in kilo grams. highlight%2845%2F2.205=20.4%29 kg
:
45) x +.023(x)=10.55
.....1.023x=10.55
..... highlight%28x=10.55%2F1.023=10.31%29amount of avg wage last year
10) 1 liter =33.81 ounces so 2 liters = 67.62.......now we divide this by the 5 ounce servings for each child.
67.62/5=13.52 servings but we know that only highlight%2813%29 children will get a full 5 ounce serving. 52/100 of an ounce is left over.