Question

unitary method:
Find the cost of 120 pens if 1 dozen pens cost rupees 60
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Answer 1

Answer:

600 pens.

Step-by-step explanation:

Cost of one dozen pens = ₹ 60

Cost of one pen = 60÷12 = ₹ 5

Therefore, cost of 120 pens= 5×120 = 600 pens.

Answer 2

Answer:

Rs:24

Step-by-step explanation:

Cost of 1 dozen pens = Rs:60

Cost of 120 pens = Rs:60/12

= Rs:5

Cost of 120 pens = 120*5

= Rs:24