Question

a dozen colour pens cost rs 120. how much will 15 such pens cost?


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Answer 1

Answer:

1 dozen = 12

it means 12pens = 120₹

so,. 1pen cost =120/12

= 10₹

so 15 pens costs = 15x10

=150₹

Answer 2

Answer:

1 dozen = 12

therefore cost of 12 pens = rs. 120

therefore cost of 1 pen = 120/12

cost of 1 pen = 10 Rs

cost of 15 pens = 10*15

cost of 15 pens = 150Rs.

therefore cost of 15 pens is Rs. 150

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