Twenty children were sharing equally the cost of a present for their teacher. When four of the children decided not to contribute, each of the other children had to pay Tk. 50 more. How much did the present cost in Taka?
Solution
Correct Answer: Option C
suppose, price of the gift is x taka at first, 20 student gave x taka 1 student gave x/20 taka when, four of the children decided not to contribute, then total children = 20-4=16 so,1 student gave x/16 taka here, x/16-x/20 =1.50 or,5x-4x/20=1.50 or,x=120 the present cost in 120 Taka
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