Fridah & glen has know each other for 15yrs.if we put their ages together today they both are 110yrs.when they first met fridah was 3 times as old as glen.how old is each of them today?

Question

Set up an equation that describes the question and arrive at the correct answer by solving the equation.

Answer 1

Assume Fridah and Glenn's ages TODAY are F and G respectively.

It is given that

F + G = 110

You are given that when they met 15yrs ago, Fridah was 3 times as old as Glenn.

So first subtract 15 yrs from each of their present ages and write the equation

F - 15 = 3 * (G - 15)

Solve these equations by substitution to obtain F and G. You should find

F= 75 yrs

G= 35 yrs

Answer 2

g + f + 15= 110

f = 3g

g + 3g + 15= 110

4g = 95

g = 23.75

f = 3(23.75) = 71.25

Glen is 23.75 years old, or 23 and 9 months old.

Friday is 71.25 years old, or 71 and 3 months old.