M is twice efficient as N and N can do a piece of work in 15 days. N started the work and after a few days M joined him. They completed the work in 11 days, from the starting . for how many days did they work together?
Answers
Answered by
0
Answer:
2 Days
Step-by-step explanation:
Total Work = 30 Units
N takes 15 days so 2Units/day
M will do 4 units/day
N works for x days and they work together for 11-x days
so, 2x + (11-x)*6 = 30
X = 9, so they worked together for 11-9 = 2 Days
Similar questions