Answer:
The son is five years old
Step-by-step explanation:
Let the son's age be x
A man is five as old as his son, 5x
In five years, he would be three times as old as his son
In five years: son would be x+5
Father 5x+5
3(x+5)=5x+5
3x+15=5x+5
Collect like terms
15-5=5x-3x
10=2x
Divide by 2
10/2=2x/2
x=5
The son is five years old
It's basically saying how many times that number is multiplied by itself
ex:
2²= 2×2
2³= 2×2×2
1 gallon = 4 quarts
1 quart = 2 pints
1 pint = 2 cups
So 2 pints = 4 cups = 1 quart
4 quarts = 4 cups * 4 quarts = 16 cups
16 cups = 1 gallon
To better remember how many cups are in a gallon or quart or whatever, you can search google "super gallon man"