Question

Kevin is 39 years old and Daniel is 3 years old. How many years will it take until Kevin is only 4 times as old as Daniel?

Answer 1

k=39 and d=3

(k+y)/(d+y)=4 using k and d given...

(39+y)/(3+y)=4 multiplying both sides by (3+y)

39+y=12+4y subtracting 4y from both sides

39-3y=12 subtracting 39 from both sides

-3y=-27 dividing both sides by -3

y=9

So in nine years Kevin will be four times as old as Daniel.

check...

(39+9)/(3+9)=4

48/12=4

4=4

Answer 2

it will take nine years plz tell me if im wrong