Question

if the cost of 12 pens is rupee 84 find the coast of 7 pens​

Answer 1

Answer:

Cost of 12 pens = Rs. 84

Cost of 1 pen = Rs. 84/12=7

So,

Cost of 7 pens = Rs. 7×7= 49

Answer 2

Answer:

Such type of questions are simple to solve by Unitary method, which is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Accordingly,

The cost of 12 pens is ₹ 84,

Thus cost of each pen is ₹84/12 = ₹7

The cost of 10 such pens = ₹7 × 10 = ₹70

Answer the cost of 10 such pen will be ₹70.

Step-by-step explanation:

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