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Exercises Numbers, fractions and percents

Example 5.68 from Prealgebra, 5.6 Ratios and Rate

Ratios and Rate: example 5.68

Translate the word phrase into an algebraic expression:

ⓐ $427$ miles per $h$ hours
ⓑ $x$ students to $3$ teachers
ⓒ $y$ dollars for $18$ hours

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution

ⓐ

$427 miles per h hours$

Write as a rate. $\frac{427 miles}{h hours}$

ⓑ

$x students to 3 teachers$

Write as a rate. $\frac{x students}{3 teachers}$

ⓒ

$y dollars for 18 hours$

Write as a rate. $\frac{$ y}{18 hours}$

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Translate the word phrase into an algebraic expression.

ⓐ $689$ miles per $h$ hours ⓑ $y$ parents to $22$ students ⓒ $d$ dollars for $9$ minutes

How did it go?

PreviousRatios and Rate: example 5.67 Next Simplify and Use Square Roots: example 5.69

From Prealgebra (1st edition) by OpenStax (Rice University), section 5.6, licensed under CC BY 4.0. Original at openstax.org. We split the solution into steps; the words, numbers and figures are the book's. OpenStax doesn't endorse this site.