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The angles of elevation of the top of a building from the top and bottom of a tree are x and y respectively. If the height of the tree is h meter then, in meter, the height of the building is:
Raju buys 75 articles at the same price each. He sells one-third of them at a profit of 40% and 20% of the remaining at a profit of 20%. He sells the remaining articles at a loss equal to the cost price of 7 articles. What is his gain/loss per cent in the entire transaction?
A alone can complete a work in 30 days while B alone can complete the same work in 20 days. In how many days both working together can complete the same work?
A, B and C can individually complete a task in 24 days,16 days and 32 days respectively. If A and C start the work and worked for 6 days and left, then the number of days required by B to complete the remaining task, is :