For the following questions answer them individually
A and B together can complete a piece of work in 12 days, B and C can do it in 20 days and C and A can do it in 15 days. A, B and C together can complete it in
A and B together can complete a work in 3 days. They start together but, after 2 days, B left the work. If the work is completed after 2 more days, B alone could do the work in
A does 20% less work than B. If A can complete a piece of work in 15/2 h, then B can do it in
The diameters of two circles are the side of a square and the diagonal of the square. The ratio of the areas of the smaller circle and the larger circle is
The total surface area of a sphere is $$8\pi$$ square unit. The volume of the sphere is
A conical flask is full of water. The flask has base radius $$r$$ and height $$h$$. This water is poured into a cylindrical flask of base radius mr. The height of water in the cylindrical flask is
A dozen pairs of socks quoted at Rs. 180 are available at discount of 20%. How many pairs of socks can be bought for Rs. 48?
The marked price of a table is Rs. 12000. If it was sold for Rs. 10500 after allowing a certain discount, then the rate of discount is
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