engineering recuitment Vizag Steel MT Mechanical 2020 Test Series Quantitative Aptitude Time and Work Work Efficiency
X and Y can complete a work in 10 days, Y and Z in 12 days and X and Z in 15 days. What will be the ratio of efficiency of X, Y and Z respectively?
1
10 : 12 : 15
2
6 : 5 : 4
3
5 : 7 : 3
4
5 : 6 : 4