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Question
If 3 dozen eggs cost Rs. 90, find the cost of 3 scores of eggs. (1 score = 20)
Solution
3 dozen = 3 x 12 = 36 eggs,
3 scores = 3 x 20 = 60
The cost of 36 eggs is = Rs. 90
The cost of 1 egg will be = Rs. `90/36`
∴ Cost of 60 eggs will be = Rs.`(90 xx 60)/36`
= Rs. 150
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