Thursday
July 31, 2014

Homework Help: maths

Posted by saila on Saturday, May 19, 2012 at 6:02am.

1. a first train travelling at x km an hour takes t hour less to travel y km than a slower one takes to travel z km . find the different between their speed
2. a man has one kind of coffee at 'a' paise
per kg and another at 'b' paise per kg how much of each must take to form a mixture of (a0b)kg which b can sell at c paise /kg without loss.

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