Question

the sum of the three numbers is 69. if the second number is equal to the first diminished by 8, and the third number is 5 times the first. what is the numbers? if x represents the first number, then which of the following equations could be used to solve the problem?

Answer 1

a+b+c=69
a=b+8
b=a-8
c=a/5
a is 11 (3+8= 11 which is a)
b is 3 (11-8=3 which is b)
c is 55. (11 x 5=55 which is c)