69. What percent of 70 is 14?
70. What percent of 8 is 6?
71. 32 is 50% of what number?
72. 16 is 20% of what number?
73. 10 is 20% of what number?
74. 11 is 25% of what number?
75. 37 is 4% of what number?
76. 90 is 80% of what number?
77. 8 is 2% of what number?
78. On a 120-question test, a student got 84 correct answers. What percent of the problems
did the student work correctly?
79. An engineering student answered 81 questions correctly on a 90-question test. What
percent of the questions did she answer correctly? What percent were incorrect?
80. A basketball player made 63 out of 75 free throws. What percent is this?
81. A family spends $450 every month on food. If the family’s income is $1,800 each
month, what percent of the income is spent on food?
82. How much HCI (hydrochloric acid) is in a 60-milliliter bottle that is marked 75% HCI?
83. How much acetic acid is in a 5-liter container that is marked 80% acetic acid? How
much is water?
84. A farmer owns 28 acres of land. Of the 28 acres, only 65% can be farmed. How many
acres are available for farming?
85. Of the 420 students enrolled in basic math, only 30% are first-year students. How
many are first-year students? How many are not?
86. If 48% of the students in a certain college are female and there are 1,440 female
students, what is the total number of students in the college?
87. Suppose 60% of the graduating class in a certain high school goes to college. If 240
students from this graduating class are going to college, how many students are in the
class?
88. In a shipment of airplane parts, 3% are known to be defective. If 15 parts are food to be
defective, how many parts are in the shipment?
89. There are 3,200 students are our school. If 52% of them are men, how many men are
enrolled in our school?
90. 75% of the students in chemistry have had algebra. If there are 300 students in
chemistry, how many of them have had algebra?