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