Richard's age is equal to 3 times what it will be in 3 years time, minus 3 times what it was 4 years ago. How old is he?
a) 20
b) 21
c) 22
d) 23
let Richards present age be x
x = 3(x+3) - 3(x-4)
Solve
To find Richard's age, we need to set up an equation based on the given information.
Let's assume Richard's current age is x. According to the given information, his age in 3 years will be x + 3, and his age 4 years ago was x - 4.
Based on the given equation, we can write:
x = 3(x + 3) - 3(x - 4)
Now, let's simplify the equation:
x = 3x + 9 - 3x + 12
Now, combine like terms:
x = 21
Therefore, Richard's age is 21 years old.