Question

Fifteen decreased by the quotient of a number and 3 is 20

Answer 1

(n/3) - 15 = 20 <== ur equation
n/3 = 20 + 15
n/3 = 35
n = 35 * 3
n = 105 <== ur solution

Answer 2

The required number is -15.

Explanation:

Given : Expression 'Fifteen decreased by the quotient of a number and 3 is 20'.

To find : The number ?

Solution :

Let the number be 'x'.

According to statement,

Fifteen decreased by the quotient of a number and 3 is 20,

`15-(x)/(3)= 20`

Solving the equation by subtracting 15 both side,

`-(x)/(3)=5`

Cross multiply,

`x=-5* 3`

`x=-15`

Therefore, The required number is -15.