Question

If the cost of 2:dozen copies is Rs 720 , find the cost of 72 copies .
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Answer 1

Rs 2160

Explanation:

1 dozen = 12 copies

2 dozen = 24 copies ( 2*12)

72÷12 = 6 dozen

72 copies = 6 dozen

1 dozen = Rs 720÷2

1 dozen Rs 360

6 dozen = 360*6

6 dozen = 72 copies = Rs 2160