Maths countdown 4 word problems

[Guest]

I need solution of the following questions;
1.In a factory, a machine fills twenty 100-ml bottle with oil in one minute. How many litres of oil are bottled in one hour?
2.If 1.5-ml of water leaks from a tap in one minute, how much water will be wasted in 3/4 of an hour?
3.A pocket dictionary is 20 mm thick. How many of these dictionaries are needed to form a pile 48 cm high?

[shyamjayakannan]

1) [tex]\frac{20\times100\times60}{1000}=\boxed{120l/hr}[/tex]

2) [tex]1.5\times\frac{3}{4}\times60=\boxed{67.5ml}[/tex]

3) [tex]\frac{48\times10}{20}=\boxed{24}[/tex]