Answer: 20% pay less than $20 a month for their renter's insurance.
Step-by-step explanation: First, figure out how many total people were surveyed (in this case, 15 people). Next, find out how many people pay less than $20 a month for their renter's insurance (according to this histogram, 3 people). Finally, figure out what percent of 15 is 3. This can be done by using proportions:
3 / 15 = x / 100 // Multiply 15·x, and 3·100. You should end up with 15x= 300. Divide both sides by 15, and you should get 20(300÷15=20). Therefore, x=20 and 3 is 20% of 15.
20% of people sampled pay less than $20 a month for their renter's insurance.