১৮৩৯২
A man buys an article for Tk 300 and sells it for Tk 360. His gain percent is-
উত্তর
20%
১৮৩৯৫
If 5 men can do a piece of work in 10 days how many days will 10 men take to do it?
উত্তর
5 days
১৮৩৯৬
A train 150m long is running at a speed of 90 km/h. Time taken by the train to cross a tree is-
উত্তর
6 seconds