A) \[0.05\text{ }x\text{ }+\text{ }0.12y~\]
B) \[0.05x\text{ }-\text{ }0.12y\]
C) \[0.17(x+y)\]
D) \[0.17\text{ }xy\]
Correct Answer: A
Solution :
Charge per minute for local call = Rs. 0.05 Number of local calls = x minutes. \[\therefore \] Charge for local calls = Rs. (0.05 x) Charge per minute for long distance calls = Rs. 0.12 Number of long distance calls = y \[\therefore \] Charge of long distance calls = Rs. (0.12 y) Therefore, the required expression for total cost = Rs. \[(0.05x+0.12y)\]
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