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21-01-2022
Mathematics

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Gran is four times older than her grandson.their ages together total 75 years. a)how old is gran? b)how old will her grandson be in five years time?

Respuesta :

21-01-2022

Answer: a. 60 b. 20

Step-by-step explanation: 4x + x = 75

5x = 75

x = 15 (the age of the grandson)

(a) 4x = 60

(b) 15 +5 = 20

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