CAT QUANT PROFIT LOSS 2

Asha sold 10 pencils to Isha making a profit equal to the cost price of 2 pencils. What was her profit percentage in the deal?

Nisha sold 10 watches to Asha making a profit equal to the selling price of 2 watches. How much percent profit did she make in the deal?

Given below is a question followed by three statements. Study the statements and decide which of the statement(s) is/are necessary to answer the question. What was the discount percentage given?
I) On selling the table, for Rs $12650,26.5 \%$, Profit was earned.
II) If there had been no discount, $30 \%$ would have been earned as profit.
III) The Cost price of the table was Rs 10000

Rushabh sold some CDs to Rushant @ 4 CDs at the cost price of $3 .$ After a few days Rushant sold the same CDs back to Rushabh @ 3 CDs for the price he had paid for 4 . Find the percentage loss incurred by Rushabh in the transaction.

Asish sold 2 watches to Ishan for Rs 891 each. He made a profit of $10 \%$ on one watch and a loss of $10 \%$ on the other. How much profit or loss did he make on the whole?

A bookseller gets a discount of $12.5 \%$ on a certain book which is priced at Rs 8 per copy from the whole seller. If he purchases 15 copies of the book, what is the total discount that he gets?

Anish bought 30 watches at wholesale rate. He sold 20 of them at $10 \%$ profit and the rest at $20 \%$ profit. What percentage profit did he make on the whole?

Ram sells onions in the streets of Chandni Chowk. Due to recent shortfall in the supply of onions, he doubles his selling price despite the cost price remains same for him due to a fixed price contract. He realizes that his profit have tripled. Find the original profit percent.