SSC IB Security Assistant & MTS Mock Test Series 2023 Quantitative Aptitude Time and Work Work Efficiency
If 3 boys and 8 girls can do a work in 6 days, and 1 boy and 5 girls can finish the same in 12 days, find the ratio of efficiencies of a boy and a girl.
1
2 ∶ 1
2
1 ∶ 5
3
2 ∶ 5
4
3 ∶ 2