Question

solve these three questions with explanation

Answer 1

(c) 3x+25
let son's present age be y
then age 5 yrs ago=y-5
but age was x as given. So
x=y-5
x+5=y

so, the present age is x+5
father's present age= 2(x+5)
=2x+10

After 5 yrs..... father's age = 2x+15
son's age=x+10

p(x)= x+10+2x+15
=3x+25

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