The sum of three numbers is 107 The third number is 2 times the first. The second number is 7 more than the first. What are the numbers?

Answer 1

Let a = first number

b = second number

c = third number

Then,

a + b + c = 107

c = 2a

b = a + 7

So,

a + (a + 7) + 2a = 107 or 4a = 100 or a = 25

Therefore,

a = 25

b = a + 7 = 32

c = 2a = 50