Answer:
Hannah is 27 years old.
Robert is 34 years old.
Step-by-step explanation:
Robert = x
Hannah = x - 7 ("7 years younger than Robert")
Robert + Hannah = 61
x + (x - 7) = 61
x + x - 7 = 61
2x - 7 = 61
2x = 61 + 7
2x = 68
x = 68 ÷ 2
x = 34
Robert = 34
Hannah = x - 7
Hannah = 34 - 7
Hannah = 27
