Mr. Dali's car uses 3/4 gallons of gas each time he drives to work. If his has tank holds exactly 9 gallons of gas, how many tanks of gas does be need to make 18 trips to work?
A. 1 1/2
B. 2 1/2
C. 4
D. 6
E. 9

Question

anonymous · Answer

First you should multiply 3/4 by 18

calculusxy · Answer

Do you divide 9 by 3/4?

calculusxy · Answer

Then multiply by 18?

anonymous · Answer

No you multiply 18 by 3/4 to first see how many gallons he uses in his trips.
then you divide that number by 9 to compare it to the amount his tank holds.
The answer is in number of tanks.

anonymous · Answer

Does that make sense?
18(3/4) = 13.5
13.5/9 = 1.5 tanks