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: a man can row a boat at 10 kmph in still water and the speed of the stream is 8 kmph . what is then time taken to row a distance of 90 km down the stream ? 
Options: a ) 8 hrs , b ) 5 hrs , c ) 15 hrs , d ) 15 hrs , e ) 20 hrs

SOLUTION: b

PROBLEM: Problem: a pipe can fill a cistern in 33 minutes . find the time in which 1 / 11 part of the cistern will be filled ? 
Options: a ) 5 min , b ) 2 min , c ) 3 min , d ) 1 min , e ) 10 min

SOLUTION: c

PROBLEM: Problem: light glows for every 15 seconds . how many times did it between 1 : 57 : 58 and 3 : 20 : 47 am 
Options: a ) 381 , b ) 332 , c ) 383 , d ) 334 , e ) 385

SOLUTION:
b