Proportion Word Problems

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion word problem?

Back

To solve a proportion word problem, identify the ratios involved, set up a proportion equation, and solve for the unknown.

Front

If 17 hours of practice is done in 2 weeks, how many hours is that per week?

Back

8.5 hours per week.

Front

How do you find the total hours practiced in a different time frame?

Back

Multiply the weekly hours by the number of weeks.

Front

What is the formula to estimate a larger population based on a sample?

Back

(Number of favorable outcomes in sample / Total sample size) x Total population size.

Front

If 6 out of 22 students prefer green, what is the ratio of students who prefer green?

Back

The ratio is 6:22 or simplified to 3:11.

Front

How do you calculate the number of items you can buy with a certain amount of money?

Back

Divide the total amount of money by the price of one item.

Front

If 4 bulbs cost $8, what is the cost of one bulb?

Back

$2 per bulb.

Front

If you have $32, how many bulbs can you buy if one bulb costs $2?

Back

You can buy 16 bulbs.

Front

What is the total number of students who would choose green if there are 396 students in total?

Back

Estimated number is 108 students.