The sum 24

The sum of the three numbers is 80. The first number is 8 less than the third. The second number is 2 times the third. What are the numbers?

Correct answer:

a =  14
b =  44
c =  22

Step-by-step explanation:

a+b+c=80 a=c8 b=2 c  a+b+c=80 ac=8 b2c=0  Row2Row1Row2 a+b+c=80 b2c=88 b2c=0  Row3+Row2Row3 a+b+c=80 b2c=88 4c=88  c=488=22 b=188+2c=188+2 22=44 a=80bc=804422=14  a=14 b=44 c=22

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