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Popular Word Problems >

The difference of three times a number and three is twenty-one. Find the number.

Solution

T h e d i ff ere n ce o f t h ree t im es a n u mb er an d t h ree i s tw e n t y - o n e . F in d t h e n u mb er .

Solution

The number : 8

Solution steps

Represent the number with

x

A.T.Q.:

3 x - 3 = 21

Solve for

x, 3 x - 3 = 21 : x = 8

The number : 8

Popular Examples

Seven more than the quotient of a number and 3 is 10. What is the number?Mrs. Ray is buying some groceries. They total to 35.50. Sales tax is 4.5%. When she goes to pay, how much will she owe?20 is 16% of what number?The sum of a number and three is greater than ten.6 added to three fourths of a number is 15.