Question

there are 12 inches in 1 foot and 5280 feet in one mile. Jada ran 3 1/4 miles.a. How many feet is that?b. How many inches is that?

Answer 1

a. We want to convert 3 1/4 (or 3.25) miles into feet. We can use the next proportion:

`\frac{5280\text{ feet}}{x\text{ feet}}=\frac{1\text{ mile}}{3.25\text{ miles}}`

Solving for x, we get:

x = 5280*3.25/1

x = 17160 feet

b. We want to convert 17160 feet into inches. We can use the next proportion:

`\frac{12\text{ inches}}{x\text{ inches}}=\frac{1\text{ foot}}{17160\text{ feet}}`

Solving for x, we get:

x = 12*17160/1

x = 205920 inches