By increasing the price of entry ticket to a fair in the ratio 11:16, the number of visitors to the fair has decreased in the ratio 19:9. In what ratio has the total collection increased or decreased?
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If 1 shirt is offered free on purchase of 3 shirts priced Rs 500 each, then what is the effective discount on each shirt?
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∆ABC is right angled at B. If m∠A = 30°., then Sec C =?
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Find the L.C.M of 4/5, 2/3 and 5/7.