Exercise 4 Page 44

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 are given the following rate. $ 420for 15tickets Let's write this rate as a fraction. $ 420/15tickets To find the unit rate, we need to write an equivalent rate with a denominator of 1 ticket. Let's ignore the units for simplicity.

420/15

ReduceFrac

a/b=.a / 15./.b / 15.

420/ 15/15/ 15

CalcQuot

Calculate quotient

28/15/15

QuotOne

a/a=1

28/1

Finally, we got the unit rate. $ 420/15tickets = $ 28/1ticket The unit rate is $ 28 per ticket.