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: the megatek corporation is displaying its distribution of employees by department in a circle graph . the size of each sector of the graph representing a department is proportional to the percentage of total employees in that department . if the section of the circle graph representing the manufacturing department takes up 252 ° of the circle , what percentage of megatek employees are in manufacturing ? 
Options: a ) 20 % , b ) 25 % , c ) 30 % , d ) 35 % , e ) 70 %
e

Problem: a contractor undertakes to built a walls in 50 days . he employs 20 peoples for the same . however after 25 days he finds that only 40 % of the work is complete . how many more man need to be employed to complete the work in time ? 
Options: a ) 25 , b ) 30 , c ) 35 , d ) 30 , e ) none of these
d

Problem: a alone can complete a work in 16 days and b alone can do in 12 days . star ɵ ng with a , they work on alternate days . the total work will be completed in 
Options: a ) 1314 , b ) 1312 , c ) 1334 , d ) 1344 , e ) none of these

c