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