Intermediate math

Question

One number is 5 times a first number. A third number is 100 more than the first number. If the sum of the three numbers is 562, find the numbers.

Answer 1

S=5F

T=100+F

F+S+T = 562

F+5F +100+F = 562

7F =562-100= 462

F = 462/7 = 66 = First Number

S = 5(66) =330 = Second Number

T =F+100 = 166 = Third Number

66+330+166 = 562