If Salam makes a box every 5 minutes and Kalam takes 7 minutes to make a box, what will be the ratio of the number of boxes produced by Salam to the number of boxes produced by Kalam if they work 5 hours and 50 minutes?
A. 5 to 6
B. 5 to 7
C. 6 to 5
D. 7 to 5
সঠিক উত্তরঃ
D.
7 to 5
Explanation:
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