insurence exam UIIC Assistant Mock Test 2023 Quantitative Aptitude Ratio and Proportion Compound Ratios
In a class there are some boys and girls. If 20 girls are taken out the ratio of girls and boys becomes 1 ∶ 3, then 20 boys were taken out and the ratio of boys and girls became 2 ∶ 1. The number of girls in the beginning is :
1
25
2
40
3
30
4
75
5
None of these