Question
The ratio of Luis's total points to that of Charlie's in the mock exam was 7 : 8. In the next mock exam, Luis's points increased by 70%. By what percentage must Charlie's points be increased if their total points were to be the same? Round off your answer to the nearest whole number.
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The ratio of Luis's total points to that of Charlie's in the mock exam was 7 : 8. In the next mock exam, Luis's points increased by 70%. By what percentage must Charlie's points be increased if their total points were to be the same? Round off your answer to the nearest whole number.