Question

There are 3 children in a family named Lisa, Susan, and John. If Lisa is 5 years older than her sister, Susan, and if John is 7 years older than Lisa, and the total of the ages of all 3 children is 50, then how old is Susan

Answer 1

Answer:

Susan is 8

Step-by-step explanation:

Answer 2

Answer:

Lisa: 16

Susan: 11

John m: 23

Step-by-step explanation:

Susan: s

Lisa: s+5

John: s+5+7 = s+12

s + s+5 + s+12 = 50

3s + 17 = 50

3s = 33

s = 11

s+5 = 16

s+12 = 23