On every fourth visit to the hair salon, you receive a discount of $5. On every tenth visit, you receive a free hair product. After how many visits do you receive the discount and a free product at the same time?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

Edger needs 6 cookies and 2 brownies for every 4 plates how many cookies and brownies does he need for 10 plates