Question 950515
T=third number; S=second number; F=first number
S=F+9
T=3S=3(F+9)=3F+27
F+S+T=101 Substitute for S and T
F+(F+9)+(3F+27)=101
5F+36=101 Subtract 36 from each side.
5F=65 Divide each side by 5
F=13 ANSWER The first number is 13.
S=F+9=13+9=22 ANSWER 2: The second number is 22
T=3S=3(22)=66 ANSWER 3: The third number is 66
CHECK:
F+S+T=101
13+22+66=101
101=101