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If the selling price of 40 articles is equal to the cost price of 50 articles, the loss or gain per cent is:

A25% gain

B20% gain

C25% loss

D20% loss

Answer:

A. 25% gain


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How much wheat (in kg, rounded off to the nearest integer) costing ₹36 per kg must be mixed with 55 kg of wheat costing ₹45 per kg so that there may be a gain of 20% by selling the mixture at ₹50 per kg?
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20% ലാഭത്തിൽ ഒരു വസ്തു വിറ്റപ്പോൾ 60 രൂപ കിട്ടിയെങ്കിൽ വാങ്ങിയ വില?
Amar sells his TV at a rate of Rs. 1540 and bears a loss of 30%. At what rate should he sell his TV so that he gains a profit of 30%?