Problema Solution
johns father is 54. given that in 4 years john will be half his fathers age, what age must john be?
Answer provided by our tutors
let
j = Jon's present age
in 4 years john will be half his fathers age:
j + 4 = (1/2)(54 + 4)
by solving we find:
j = 25 years
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Jon is 25 years old now.