A history book weighs 24 ounces more than a math book. The math book is 75% of the history book. How much does each book weigh?

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

3.64 deaths an hour.

52 or what they said ☝️