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