instruction:
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'.
question:
Problem: when working alone , painter w can paint a room in 2 hours , and working alone , painter x can paint the same room in r hours . when the two painters work together and independently , they can paint the room in 3 / 4 of an hour . what is the value of r ?
Options: a ) 3 / 4 , b ) 1 [ 1 / 5 ] , c ) 1 [ 2 / 5 ] , d ) 1 [ 3 / 4 ] , e ) 2
answer:
b

question:
Problem: the sum of 4 consecutive even numbers is 140 . what would be the smallest number ?
Options: a ) 32 , b ) 88 , c ) 70 , d ) 123 , e ) 12
answer:
a

question:
Problem: if 2 men or 3 women can reap a field in 8 days how long will 3 men and 4 women take to reap it ?
Options: a ) 2 / 16 , b ) 1 / 16 , c ) 3 / 24 , d ) 5 / 16 , e ) 6 / 26
answer:
d