Question

Pls help I need a good grade asap

Answer 1

Explanation:

3n + 12 = 36

3n = 24

n = 8 (the triplets)

another child: 12 years

Answer 2

8n+12=36, triplets are 8 years old

Explanation:

total age is 36

one of them is 12 years old so -> 36-12 = 24

three triplets so 24/3 = 8

there are three 8 years olds and one 12 year old. n = 3