math
posted by vic on .
The sum of three numbers is 92. The first number is 1/3 of the second, and the second is 2/5 of the third. What is the second number?

third  x
second  (2/5)x = 2x/5
first  (1/3)(2x/5) = 2x/15
x + 2x/5 + 2x/15 = 92
times 15
15x + 6x + 2x = 1380
x = 60
third = 60
second = 24
first = 8