If cost of 12 pens is Rs.84, then what is the cost of 10 such pens?


A) Rs.90

B) Rs.72

C) Rs.65

D) Rs.70

Correct Answer:
D) Rs.70

Description for Correct answer:
Cost of 12 pens = Rs.84

Therefore, Cost of 1 pen = Rs. \( \Large \frac{84}{12} \)

Cost of 10 pens = \( \Large \frac{84}{12} \times 10 \)

= \( \Large 7 \times 10 \) = Rs.70

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