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A trader sells pulses at a 32% profit and uses weights 20% less than the actual measure. Find his gain percentage.
A trader marks his goods at 40% above the cost price and offers a discount of 20%. If the trader still makes a profit of Rs. 96, find the cost price.
A shirt is marked 40% above the cost price and sold after a discount of Rs.126 at Rs.322. Find the cost price of the shirt.