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DIA [1.3K]
4 years ago
6

the cost of diesel fuel varies directly with the number of gallons purchased. if 21 gallons of diesel fuel costs $73.50, how man

y gallons of diesel fuel can be purchased for $98?
Mathematics
2 answers:
atroni [7]4 years ago
8 0
73.50÷21=3.5 per gallon

98÷3.5=28 gallons ...answer
Marta_Voda [28]4 years ago
4 0
The key here is the word "directly." We need to set up a ratio.

gallons / cost = gallons / cost

21 / 73.50 = gallons / 98

Cross multiply and simplify.

(21)(98) = gallons * 73.50

2058 = gallons * 73.50

2058 / 73.50 = gallons

28 = gallons
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Step-by-step explanation:

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