Exercise 3 Page 12

A rate is a special type of ratio that compares quantities with different kinds of units. A unit rate is a rate that has been reduced to have a denominator of 1 unit. We want to write 5 pounds for $2.49 as a unit rate. Let's start by writing the given rate as a fraction with the price in the numerator. $ 2.49/5poundsTo find the unit rate, we need to write an equivalent rate with a denominator of 1 pound. Let's ignore the units for simplicity.

2.49/5

ReduceFrac

a/b=.a / 5./.b / 5.

2.49/ 5/5/ 5

UseCalc

Use a calculator

0.498/5/5

QuotOne

a/a=1

0.498/1

RoundDec

Round to 2 decimal place(s)

0.50/1

Finally, we got the unit rate. $ 2.49/5pounds ≈ $ 0.50/1pound As we can see, the unit rate is about $0.50 per pound.