Answers by kp6602

In a $12$-hour clock that runs correctly, how many times do the second, minute, and hour hands of the clock coincide, in a $12$-hour duration from $3$ PM in a day to $3$ ...

A man can row at $8$ $km$ per hour in still water. If it takes him thrice as long to row upstream, as torow downstream, then find the stream velocity in $km$ per hour.

A number consists of two digits. The sum of the digits is $9$. If $45$ is subtracted from the number, its digits are interchanged. What is the number?$63$$72$$81$$90$