Please solve 10th one in copy

Solution:
Let number of winners be m and number of participents who does not win be n.

Then, m+n=60...1
Since the total prize money is Rs. 6000.
Thus, 200m+50n=6000...2
From (1), n=60-m
Equation (2) gives,
200m+50n=60004m+n=1204m+60-m=1203m=60m=20n=60-20=40

Hence, the number of winners are 20.

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