For the following questions answer them individually
A does a work in 10 days and B does the same work in 15 days. In how many days they together will complete the same work ?
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour ?
In what ratio must tea at Rs.62 per kg be mixed with tea at !72 per kg so that the mixture must be worth ?64.50 per kg.
