⁵₈ of Peter's savings is equal to ²₃ of George's savings. The difference in their savings is equal to ¹₅ of Gabriel's savings. Peter saves $22 more than Gabriel. Find the total amount of savings of all 3 boys.
⁵₈ Peter's savings = ²₃ George's savings
¹⁰₁₆ Peter's savings = ¹⁰₁₅ George's savings

Peter's savings : George's savings 
16 : 15

Difference in the savings of Peter and George
= 16 u - 15 u
= 1 u

1 u = ¹₅ Gabriel's savings

Gabriel's savings
= 1 ÷  ¹₅
= 1 x  ⁵₁ 
= 5 u

Peter : George : Gabriel
16 : 15 : 5

Difference in the savings between Peter and Gabriel
= 16 u - 5 u
= 11 u

11 u = 22

1 u = 22 ÷ 11 = 2

Total amount of savings
= 16 u + 15 u + 5 u
= 36 u
= 36 x 2
= $72

Answer(s): $72