The sum of three numbers is 113 . The second number is 3 times the third. The first number is 7 less than the third . What are the numbers?

Answer 1

a = first number

b = second number

c = thirdt number

b = 3 c

a = c - 7

a + b + c = 113

c - 7 + 3 c + c = 113

5 c = 113 + 7

5 c = 120

c = 120 / 5

c = 24

a = c - 7 = 24 - 7 = 17

b = 3 c = 3 * 24 = 72

first number = 17

b = 72

c = 24

17 + 72 + 24 = 113