A bus use one gallon of petrol to travel 15 km. After a tune- up ,the bus travels 15% farther on one gallon .How many gallon of petrol will it take or the bus to travel 150km after tune up?
A. 8.5
B. 8.7
C. 8.9
D. 9.0
সঠিক উত্তরঃ
B.
8.7
Explanation:
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