In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Q: Problem: a tank can supply water to a village for 60 days . if a leak at the bottom of the tank drains out 10 liters per day , the supply lasts for 45 days only . for how many days will the supply last if the leak drains out 20 liters per day ? 
Options: a ) 15 , b ) 18 , c ) 20 , d ) 24 , e ) 36

A: e
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Q: Problem: on a map the distance between two mountains is 312 inches . the actual distance between the mountains is 140 km . ram is camped at a location that on the map is 34 inch from the base of the mountain . how many km is he from the base of the mountain ? 
Options: a ) 14.83 , b ) 14.81 , c ) 14.8 , d ) 15.25 , e ) 14.12

A: d
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Q: Problem: a person crosses a 800 m long street in 5 minutes . what is his speed in km per hour ? 
Options: a ) 1.23 , b ) 2.86 , c ) 4.36 , d ) 9.25 , e ) 9.61

A:
e
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