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P and Q can do a project in 60 and 30 days respectively. In how many days can they complete 90% of the project if they work together?
- A9 days
- B27 days
- C36 days
- D18 days
Answer not set
Discussion 1
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CCommunity
Let the total work is 60 units
P can do it in 60 days i.e. 1 unit work per day
Q can do it in 30 days i.e. 2 unit work per day
If both work together 3 units work can be don in a day.
90% of total work is 0.9 * 60 = 54 units.
54 units work can be done by both P & Q = 54 / 3 = 18 days.
P can do it in 60 days i.e. 1 unit work per day
Q can do it in 30 days i.e. 2 unit work per day
If both work together 3 units work can be don in a day.
90% of total work is 0.9 * 60 = 54 units.
54 units work can be done by both P & Q = 54 / 3 = 18 days.