Answer: first number = 24
second number = 19
third number = 57
Step-by-step explanation:
Let the second number be x. From the information given,
the first number is 5 more than the second. This means that
the first number is x + 5
The third number is 3 times the second. This means that
the second number is 3x
If the sum of the three numbers is 100, it means that
x + 5 + x + 3x = 100
5x + 5 = 100
5x = 100 - 5 = 95
x = 95/5
x = 19
The first number = 19 + 5 = 24
The second number = 19
the third number = 3 * 19 = 57