Pens: Rs. 21 each Erasers: Rs. 5 each
A) Rs. 110
B) Rs. 111
C) Rs. 112
D) Rs. 109
E) None of these
Correct Answer: D
Solution :
Answer (d) is correct. Here, the cost of 1 pen = Rs. 21 Therefore, the cost of 4 pens = Rs. (21 + 21 + 21 + 21) = Rs. 84 Now, the cost of 1 eraser = Rs.5 Therefore, the cost of 4 erasers = Rs. (5 + 5 + 5 + 5 + 5) = Rs. 25 So we have, the total cost of 4 pens and 5 erasers \[=Rs.\text{ }84+Rs.\text{ }25=Rs.\text{ }\left( 84+25 \right)=Rs.\text{ }109\] Rest of the options is incorrect because of the correctness of option (d).
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