TASK DEFINITION: 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'.
PROBLEM: Problem: calculate the speed of a boat in still water ( in km / hr ) if in one hour , the boat goes 10 km / hr downstream and 4 km / hr upstream . 
Options: a ) 7 kmph , b ) 8 kmph , c ) 9 kmph , d ) 7 kmph , e ) 6 kmph

SOLUTION: a

PROBLEM: Problem: what is the least number of square tiles required to pave the floor of a room 11 m 50 cm long and 1 m 50 cm broad ? 
Options: a ) 724 , b ) 804 , c ) 69 , d ) 844 , e ) none

SOLUTION: c

PROBLEM: Problem: if 100 cats kill 100 mice in 100 days , then 4 cats would kill 4 mice in how many days ? 
Options: a ) 1 day , b ) 4 days , c ) 40 days , d ) 100 days , e ) 50 days

SOLUTION:
d