Problema Solution
Justin is 2 years older than Ethan. In 9 years the sum of their ages will be 30. Find the age of each boy now.
Answer provided by our tutors
j = e + 2
j + 9 + e + 9 = 30
j + e + 18 = 30
e + 2 + e + 18 = 30
2e + 20 = 30
2e = 10
e = 5
j = e + 2
j = 5 + 2
j = 7
so justin is 7 years old & ethan is 5 years old