A man can row 30 km upstream and 44 km downstream in 10 hours. Also, he can row 40 km upstream and 55 km downstream in 13 hours. Find the rate of current and the speed of the man in still water.
A man purchases a cow for Rs.3000
and sold it on the same day
allowing the buyer a credit of 2
years. If the buyer will pay Rs.3600
after 2 year at a rate of simple
interest 50/7 % per annum, then the man has a gain of
How many times can you subtract 7 from 83, and what is left afterwards? You can subtract it as many times as you want, and it leaves 76 every time.
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Students attend our lectures, not because the mathematics we teach ‘makes lots of fun’ for us, but because they believe they can learn some essential knowledge from us. And each of our young students has only one life to live. We should therefore be a