a) Rs. 72
b) Rs. 60
c) Rs. 76
d) Rs. 75
Answer: a
Explanation: Initial Cost = Rs. 75
After 20% increase in the cost, it becomes,
(75 + 20% of 75) = Rs. 90
Now, Cost is decreased by 20%, So cost will become,
(90 – 20% of 90) = Rs. 72
So, present cost is Rs. 72
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