Tutors Answer Your Questions about Age Word Problems (FREE)
Question 418982: Hi,
My question is to be solved using simultaneous equations.
Twelve years ago Jack was five times as old as Jill. In three years time Jill will be half of Jacks age. What are Jack and Jills present ages.
So far I have a chart representing Jack and Jill down the left with age now, age -12 and age +3 across the top.
The first equation is y-12=5(x-12) simplified to y=5x-48
The second equation is x+3=0.5(y+3) simplified to x=0.5y-1.5
That is as far as I have been able to progress. I am struggling with the fact both simplified equations still have a variable so cannot be substituted into another equation.
Regards,
Wayne
Click here to see answer by scott8148(6628)   |
Question 418982: Hi,
My question is to be solved using simultaneous equations.
Twelve years ago Jack was five times as old as Jill. In three years time Jill will be half of Jacks age. What are Jack and Jills present ages.
So far I have a chart representing Jack and Jill down the left with age now, age -12 and age +3 across the top.
The first equation is y-12=5(x-12) simplified to y=5x-48
The second equation is x+3=0.5(y+3) simplified to x=0.5y-1.5
That is as far as I have been able to progress. I am struggling with the fact both simplified equations still have a variable so cannot be substituted into another equation.
Regards,
Wayne
Click here to see answer by mananth(16946)  |
Question 418982: Hi,
My question is to be solved using simultaneous equations.
Twelve years ago Jack was five times as old as Jill. In three years time Jill will be half of Jacks age. What are Jack and Jills present ages.
So far I have a chart representing Jack and Jill down the left with age now, age -12 and age +3 across the top.
The first equation is y-12=5(x-12) simplified to y=5x-48
The second equation is x+3=0.5(y+3) simplified to x=0.5y-1.5
That is as far as I have been able to progress. I am struggling with the fact both simplified equations still have a variable so cannot be substituted into another equation.
Regards,
Wayne
Click here to see answer by josmiceli(19441)  |
Question 419294: Ann and Bill are both celebrating their birthday today. Two years from now Ann will be twice as old as Bill, while 3 years ago Ann was three times as old as Bill. How old is Bill now?
WHICH IS THE RIGHT ANSWER: 6, 8, 11, OR 12 YEARS OLD?
Click here to see answer by ewatrrr(24785)  |
Question 419680: Hi tutor, i really need help with this question. Im a really hard worker, and ive been pushing too do well in grade nine so i can get into pure classes in highschool. My biggest problem is math, and i really need help with this problem. Help would be greatly appreciated, please and thank-you. God bless. Question: Ryan is now three times as old as Sabrina. Eight years ago Ryan was five times that of Sabrina. Find there present ages. Can you please show how you got the answer, and provide a table as well. Thank - you so much(:
Click here to see answer by nerdybill(7384)  |
Question 420205: Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001518x^4 + 0.067326x^3 – 1.4367x^2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it is 12 years old?
Click here to see answer by richard1234(7193)  |
Question 420411: I just need to know what mathematical equation to use to find out how old I will be when I'm 3x's older than someone? I was 12 when my little sister was born, and I need to find out how old we will each be when I'm 3x's older than her. Thanks for your help.
Click here to see answer by sudhanshu_kmr(1152)  |
Question 421471: andrew is making a birthday card for her sister. he wants to draw flowers as many as the age of her sister. how many flowers he need to draw if her sister is 6 years older than him, and the sum of their ages five years from now is 34
Click here to see answer by robertb(5830)  |
Question 421513: A father is five times as old as his daughter. In six years he will be three times as old as she will be. How old is the daughter now. ( i know how to solve the problem, i am just stuck with assigning the formulas. In my math class its asked that we assign each person a variable ie: x and the other x+2) Any help would be great thanks.
Click here to see answer by josmiceli(19441) |
Question 422437: “There are seven less than twice the marbles in Tim’s box as there are in Amelia’s box. Chris has six more marbles than Amelia. How many marbles does Amelia have if together the three of them have 95 marbles?
Click here to see answer by stanbon(75887) |
Question 424756: An amateur drama group hire a theatre for their production. They expect to sell all 850 tickets, some at $12 and the rest at $8. The group require the ticket sales to cover their $3760 production costs and to make a profit of $4000. If they are to exactly achieve this target and their expectations regarding ticket sales are correct how many of the 850 tickets should they charge $12 for and how many should they charge $8 for?
(Need help thanks!!)
Click here to see answer by htmentor(1343)  |
Question 424756: An amateur drama group hire a theatre for their production. They expect to sell all 850 tickets, some at $12 and the rest at $8. The group require the ticket sales to cover their $3760 production costs and to make a profit of $4000. If they are to exactly achieve this target and their expectations regarding ticket sales are correct how many of the 850 tickets should they charge $12 for and how many should they charge $8 for?
(Need help thanks!!)
Click here to see answer by stanbon(75887) |
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