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For 15 people--each has to pay Rs.20.For 20 people--each
has to pay Rs.18. For 40 people--how much has each to pay ?
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Answer Posted / pravs
here k is constant
15(k)+x=20*15
20(k)+x=20*18
on solving we get k=12 , x=15*8
thus answer is 15
| Is This Answer Correct ? | 6 Yes | 5 No |
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