Question

A family has four siblings, each born exactly 4 years after the other. If the sum of their ages is 128, how old is each person? Define each variable first. Show equation(s) used to solve.

Answer 1

(n)+(n+4)+(n+8)+(n+12)=128
4n+24=128
4n=104
n=26

The first child is n = 26
The second child is n+4 = 30
The third child is n + 8 = 34
The fourth child is n +12 = 38.

To check:

26+30+34+38=128
128=128✓

Answer 2

awesome! Thank you so much!