Question

In a school, the number of boys and girls are in the ratio of 4:7. If the number of boys is increased by 25% and the number of girls is increased by 15%, what will be the new ratio of the number of boys to that of girls?

• A. 100:131
• B. 100:151
• C. 100:161
• D. 100:181
• E. None of these

Answer 1

The correct option is C 100:161

Boys = 4x and girls = 7x
Ratio = $4x\times 125/100:7x\times 115/100=100:161$