How many days does the moon goes around the Earth?
28 days
40 days
7 days
14 days
The moon goes around the earth in every 28 days. Therefore we can see the shapes of the full moon, new moon and crescent moon in every 28 days.
A can do a piece of work in 40 days and B in 45 days. They work together for 10 days and then B goes away. In how many days wil A finish the remaining work?