Ratios – Proportions – Percents (TSI practice)

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you calculate a proportion?

Back

A proportion is an equation that states that two ratios are equal. To solve for a missing value, cross-multiply and solve.

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part per hundred.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.

Front

If a recipe calls for 1 ½ cups of sugar for a batch of cookies, how many cups of sugar will be required to make m batches?

Back

3/2m

Front

If a car travels at an average speed of x miles per hour, how far would the car travel in 90 minutes?

Back

3x/2 miles

Front

What is the total cost of an item after a 20% discount followed by a 5% discount on the sale price?

Back

0.76c, where c is the original cost.

Front

How do you calculate the final price after applying a discount and a coupon?

Back

Final price = (Original price - Discount) - Coupon value.

Front

If a store has a 15% off sale, what is the price after the discount?

Back

Price after discount = 0.85x, where x is the original price.

Front

If a 1.5 gallon water tank takes 1 hour to fill, how long does it take to fill a 150 gallon tank?

Back

100 hours