Question
The ratio of Lee's total marks to that of Ian's in the mock exam was 8 : 9. In the next mock exam, Lee's marks increased by 70%. By what percentage must Ian's marks be increased if their total marks were to be the same? Round off your answer to the nearest whole number.
3 m

Click button first when a symbol is required. X

The ratio of Lee's total marks to that of Ian's in the mock exam was 8 : 9. In the next mock exam, Lee's marks increased by 70%. By what percentage must Ian's marks be increased if their total marks were to be the same? Round off your answer to the nearest whole number.