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max2010maxim [7]

3 years ago

8

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?

2 answers:

Lilit [14]3 years ago

8 0

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

lukranit [14]3 years ago

4 0

It will take nine years plz tell me if im wrong

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