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Question

A total of Rs. 10,000 is distributed among 150 persons as gift. A gift is either of Rs. 50 or Rs. 100. The total number of Rs. 50 gifts is _________.


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Solution

Total number of gifts = 150

Let the number of Rs. 50 be x

Then the number of gifts of Rs. 100 is (150 - x)

Amount spent on x gifts of Rs. 50 = Rs. 50x

Amount spent on (150 - x) gifts of Rs. 100 = Rs. 100(150 - x)

50x + 100 (150 - x) = 10000

50x + 15000 - 100x = 10000

50x = 15000 - 10000 = 5000

x = 100

The total number of Rs. 50 gift x = 100


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