# Chapter 5 - Ratio and Proportion - 5.1 Ratios - 5.1 Exercises: 21

It would be easier to use ounces, as it is smaller unit and using the smaller unit we avoid working with fractions and the calculation will be fast.

#### Work Step by Step

Write the ratio of 20 ounces to 3 pounds as a fraction in lowest terms. (20 ounces)/(3 pounds) It would be easier to use ounces, as it is smaller unit and using the smaller unit we avoid working with fractions and the calculation will be fast. Now let’s first convert pounds into ounces. As one pound is 16 ounces. Multiply denominator by 16. (20 ounces)/(3 pounds)× (1 pounds)/(16 ounces)= (20 ounces)/(48 ounces)= (20 ÷4)/(48 ÷4)= $\frac{5}{12}$

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