Question

Ruchi is 4 years older than Monica, and the sum of their ages is 20 years. Find their ages​

Answer 1

Answer:

let the age of monica =x

let the age of ruchi =x+4

x+x+4=20

2x+4=20

2x=20-4

2x=16

x=16/2

x=8

Answer 2

Answer:

let x year age of Monica

than age of Ruchi is X+4

so sum of their ages is X+X+4=20

2x+4=20

2x=20-4

2x=16

X=8

so age of Monica is 8 years old and age of Ruchi is 12