general Maths Puzzle

Mayank , Mirza. Little and Jaspal bought a motorbike for $60,000. Mayank paid one half of the
sum of the amounts paid by the other boys. Mirza paid one third of the sum of the amounts paid
by the other boys; and Little paid one fourth of the sum of the amounts paid by the other boys.
How much did Jaspal has to pay?

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general Other Question

My Friend bought a used pressure cooker for Rs.70. She somehow did not find it useful and so when a friend of hers offered her Rs.80 she sold it to her. However, she felt bad after selling it and decided to buy it back from her friend by offering her Rs.90. After having bought it once again she felt that she did not really need the cooker. So she sold it at the auction for Rs.100.

How much profit/loss did she make?
Approximately how many times sweeter than sucrose is a mixture consisting of glucose,
sucrose and fructose in the ratio of 1 : 2: 3 ?