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A can do a piece of work in 15 days. B is 25% more efficient than A, and C is 40% more efficient than B. A and C work together for 3 days and then C leaves. A and B together will complete the work in:
5Q:
A can do a piece of work in 15 days. B is 25% more efficient than A, and C is 40% more efficient than B. A and C work together for 3 days and then C leaves. A and B together will complete the work in:
- 13 daystrue
- 2$$2{1\over 2} days$$false
- 34 daysfalse
- 4$$3{1\over 2} days$$false
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