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A shopkeeper bought 500 notebooks. He sold 300 of them for the price he paid for all 500 notebooks. He sold 140 notebooks at 20% higher rate than at which he sold 300 notebooks and the remaining at the cost price. What is the profit percentage in the whole transactio

If 10 percent per annum rate of compound interest compounded yearly is equivalent to the x percent per annum rate of compound interest compounded half yearly, then what is the value (Approximate) of x...

A fruit vendor buys 45 kg of apples and marks it up in a order to make a 18% profit .he sells 10 kg at this price ,and 20 kg at 10% discount .but 4 kg of apples are rotten .he sells the remaining apples by increasing the marketed price by 'm' percent so as to make a overall profit of 12%.what is 'm' ?

The ratio of the price of a pen to that of a pencil is 5 1 whereas the ratio of the weight of a pen to that of a pencil is 3: 1. The weight of a packet of pencils is twice the weight of a packet of pens. By what percent is the price of a packet of pens less than the price of a packet of pencils?.​

A & B are 2 stations in between 90 miles and a train starts from A to B. At the same time a bird starts from B towards the moving train. On reaching the train, the Bird immediately turn back and return to B. The bird makes these journeys from B to the train and back to B continuously till the train reaches B. How many miles did the bird travels. (i) If the speed of the train is 60 miles/hr and speed of the bird is 90 miles/hr. (ii) If the speed of the train is 90 miles/hr and speed of the bird is 60 miles/hr

how to improve algebra I am non engineer and feel very difficult to digest algebra concept

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