A certain machine fills a bag with 7 ounces of potato chips in 3.5 seconds. At this rate how many seconds will it take the machine to fill a bag with 15 ounces of potato chips?
A. 6.5
B. 7
C. 7.5
D. 8
সঠিক উত্তরঃ
C.
7.5
Explanation:
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