We should drink 10 glasses of water in a day to stay fit. If one glass contains 210 ml of water, then we should drink _____ l to stay fit.
2.1
Quantity of water in one glass = 210 ml
Number of glasses = 10
Total quantity of water = 210×10=2100ml
Also, 1 ml=11000 l
∴2100 ml=21001000 l=2.1 l