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 man and a boy complete a work together in 24 days . if for the last 6 days man alone does the work then it is completed in 26 days . how long the boy will take to complete the work alone ?
Options: a ) 72 days , b ) 20 days , c ) 24 days , d ) 36 days , e ) 34 days
[A]: a

[Q]: Problem: due to construction , the speed limit along an 9 - mile section of highway is reduced from 55 miles per hour to 30 miles per hour . approximately how many minutes more will it take to travel along this section of highway at the new speed limit than it would have taken at the old speed limit ?
Options: a ) a ) 5.61 , b ) b ) 8 , c ) c ) 10 , d ) d ) 15 , e ) e ) 8.19
[A]: e

[Q]: Problem: working alone at their respective constant rates , a can complete a task in ' a ' days and b in ' b ' days . they take turns in doing the task with each working 2 days at a time . if a starts they finish the task in exact 8 days . if b starts , they take a day more . how long does it take to complete the task if they both work together ?
Options: a ) 6 , b ) 7 , c ) 8 , d ) 4 , e ) 2
[A]:
d