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05-04-2019
Mathematics

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A father is four times as old as his son. In 4 years, the father will be three times as old as the son. How old is each now?

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Аноним Аноним

09-04-2019

Answer:

M = 4S

In three years

M + 3 = 3(S + 3)

So you put the 4S in to substitute for the M.

4S + 3 = 3(S + 3)

4S + 3 = 3S + 9

S = 6

If the son is 6, the father must be 24.

We can check this by adding three to both ages. Then, the son will be 9 and the father will be 27, which is three times 9.

Step-by-step explanation:

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