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A package delivery company has determined that they can meet their schedules if they have 4 drivers for every 30 square miles of area they cover. If they want to offer service to a county of 75 square miles, how many drivers must they have?


A. 9 drivers

B. 10 drivers

C. 15 drivers

D. 12 drivers


Please explain your answer! : )

Respuesta :

set two fractions on is 4/30 since you need 4 drivers every 30. Then set one as X/75 since you don't know how many drivers but you know 75 is the area. Use cross multiplication, you will get that X = 10

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