Two superfast trains P & Q start from station A & B towards B & A respectively. After passing each other, they take 4 hours 48 mins & 3 hours 20 min to reach B & A respectively. If the train P is moving at 45 kmph. Find the speed of the train Q.
X, Y and Z can do a piece of work in 46 days, 92 days and 23 days, respectively, X started the work. Y joined him after 2 days. If Z joined them after 8 days from the beginning then for how many days did X work?
A can do a piece of work in 20 days while B can do it in 30 days. They work together for 10 days and the rest of the work is done by C in 5 days. If they get Rs 560 for the whole work, how much money will A get?