Question
The ratio of Glen's total marks to that of Zeph's in the mock exam was 7 : 8. In the next mock exam, Glen's marks increased by 90%. By what percentage must Zeph's marks be increased if their total marks were to be the same? Round off your answer to the nearest whole number.
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The ratio of Glen's total marks to that of Zeph's in the mock exam was 7 : 8. In the next mock exam, Glen's marks increased by 90%. By what percentage must Zeph's marks be increased if their total marks were to be the same? Round off your answer to the nearest whole number.