SSC Delhi Police Constable Driver 2025 Mock Test Quantitative Aptitude Ratio and Proportion Simple Ratios
The students of three classes are in the ratio 1 ∶ 3 ∶ 4. If 20 students of each class increased, then the ratio becomes 5 ∶ 7 ∶ 8. Find the number of students in the first class.
1
20
2
5
3
15
4
10