15 is what percent of 50. 

24 is 40% of what number?

What is 25% of 200.

18 is 20% of what number?

What is 15% of 80?

A shirt cost 500 pesos. What is the percentage if the discount is 10%.

What is the base if 35 is 70% of it?

45 is what percent of 180?

______ is 60% of 150?

16 is 80% of ________

Maria scored 18 out of 20 on a test. What percent did she get?

What is the percentage of 5% of 400?

A class has 40 pupils. If 25% are boys, how many boys are there?

A store sold 45 of its 90 notebooks. What percent of the notebooks was sold?

What is the percentage of 75% of 120?

What is the percentage of 75% of 120