Question 869801
mum's age =x

my age = (1/2)x

Dad's age = (x+5)

Add All

x+(x/2) +(x+5)=100

2x+(x/2)+5=100

multiply by 2

4x+x+10=200

5x=190

x=38.............. mum's age
my age 19 years
dad's age = 43 years