Question

The cost of 1 dozen pens is Rs:24 find the cost of 30 pens?
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Answer 1

Answer:

60 rupees

Step-by-step explanation:

one dozen =12

for 12 pen cost =24

one pen cost=24 /12 =2

for 30 pens =30 ×2=60 rupees

Answer 2

Answer:

₹60

Step-by-step explanation:

Cost of 12 pens = ₹24

∴ Cost of 1 pen = ₹$\frac{24}{12}$

                         = ₹2

∴ Cost of 30 pens = cost of 1 pen x quantity

                              = ₹2 x 30

                              = ₹60