SOLUTION: I need an equation that models how old in years each of you will be, when your ages add up to 150 years old. The ages are 42, 72, and 15 I cant seem to get make an equation. How

Question 332488: I need an equation that models how old in years each of you will be, when your ages add up to 150 years old. The ages are 42, 72, and 15
I cant seem to get make an equation. However, I think the answer is 49, 79, 22... Cand you help me get an equation?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
I need an equation that models how old in years each of you will be, when your ages add up to 150 years old. The ages are 42, 72, and 15
Ages = 42, 72,15 now
let the sum of the ages be 150 after x years
..
their ages then will be x+42, x+72, x+15
..
x+42+x+72+x+15=150
3x+129=150
add -129
3x+129-129=150-129
3x=21
divide by 3
x= 7..
Their ages will be 42+7 =49, 72+7=79, 15+7=22 years
RELATED QUESTIONS
Write an equation that models how old in years each of you will be, when your ages add up (answered by josmiceli)

If I have the ages 14, 38, and 44. Write an equation that models how old in years each of (answered by ankor@dixie-net.com)

Write an equation that models how old in years each of you will be, when your ages add up (answered by JBarnum)

if my age is 34 and my mother is 55, write an equation that models how old in years each... (answered by htmentor)

using ages 12, 40, and 38 write an equation that models how old in years each of you will (answered by Theo)

3. Write an equation that models how old in years each of you will be, when your ages add (answered by josgarithmetic)

In years, how old was the older person when you were born? 28 (Myself) 10 (brother)... (answered by Theo)

I'm having trouble writing equations that models how old in years each of us will be,... (answered by stanbon)

write an equation that models how old in years each of you will be when your ages add up... (answered by jim_thompson5910)