A is 40 more efficient than b and c is 20 less efficient than
b. Working together, then=y can finish a work in 5 days. In how many days will a alone complete 70% of the work?
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MATHS or physic.........
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Explas. A is 40% more efficient than B and C is 20% less efficient than B. Working together, they can finish a work is 5 days.
nation:
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