The sum of three times a number and `11` is `32`. Find the number.

Options

A. `11`
B. `7`
C. `32`
D. `3`

Answer

B

Explanation

If the unknown number is taken to be `x`, then three times the number is `3x` and the sum
of `3x` and `11` is `32`. That is, `3x + 11 = 32`
To solve this equation, we transpose `11` to `RHS`, so that

`3x = 32 - 11` or `3x = 21`

Now, divide both sides by `3`
`x=21/3=7`
The required number is `7`.