adding
John bought 25 balloons. 7 balloons are red. What is the percentage of balloons that are red?
28%
A container contains 60 liters of cooking oil. Last month mother used 35% of cooking oil. How many liters of cooking oil are left in the container?
39 liters
20% of 70
14
65% of 220
143
John is a quarterback. This year, he completed 350 passes, which is 70 percent of all the passes he's attempted this year. How many passes has John attempted this year?
500