Discussion of Question with ID = 099 under Basic-Simplification

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A bag contains equal number of coins each of Rs. 1, 5 and 10. What is the total number of coins in the bag, if the total money is Rs. 416?

78.

26.

76.

82.

Soln.
Ans: a

Let there be N coins of each denomination. Then N × (1 + 5 + 10) = 416, which gives N = $416/16$, and 3N = 3 × $416/16$ = 78.