Isaac is 4 years older than Kori. In 7 years the sum of their ages will be 48. How old is Isaac now?

Answer 1

I =4+K

I+7 +(K+7)=48

4+K+7 +K +7 = 48

2K = 48-18 = 30

K = 30/2 = 15 years old now for Kori

I= 4+K = 19 years old now for Isaac

in 7 years they will be 22 and 26 which sum to 48