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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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