Quantitative Aptitude :: Problems on Numbers - Discussion
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A subscriber is allowed to make a certain number of telephone calls for a lumpsum charge of Rs.300. Beyond that, he is charged at a certain rate per call. Two subscribers together make 1400 calls, and were charged Rs.425 and Rs.925 respectively. If a single person had made all of the 1400 calls he would have been charged Rs.1550. How many telephone calls are allowed for the first Rs.300?
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