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Question

Please help on the question. Thanks

Mr Goh is 3 times as old as his son. His son is w years old. In 8 years time, the sum of their ages will ne 68. How old will his son be in 8 years time?

Answer

Now —
Mr Goh : 3W
Son : W

In 8 years’ time,
3W + W + (8 x 2) = 4W + 16 ——- 68
W ——- (68 – 16)/4 = 13
13 + 8 = 21

Ans : 21 years old.

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Now                            8 yrs time

Mr Goh –> 3u          3u + 8

Son –> u                    W = u + 8

 

3u + 8 + u + 8 = 68

4u + 16 = 68

4u = 68 – 16

      = 52

u = 52÷4

   = 13

Son’s age in 8 yrs  time = 13 + 8

                                           = 21 (ans)

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Thanks alot.

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Most welcome 😊

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