A, B and C can do a work in 12, 15 and 20 days respectively. They all work for one day. Then B leaves the group. In how many days will A and C complete
the rest of the work?
8 days
7 days
9 days
6 days
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Area of a trapezium is 33.32 cm2. Its one side is 8 cm and height 5.6 cm, then the another side is