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: an employer pays rs . 20 for each day a worker works and for felts rs . 3 for each day is ideal at the end of sixty days a worker gets rs . 280 . for how many days did the worker remain ideal ?
Options: a ) 10 , b ) 40 , c ) 30 , d ) 20 , e ) 50
b

Problem: stacy has a 81 page history paper due in 3 days . how many pages per day would she have to write to finish on time ?
Options: a ) 9 , b ) 27 , c ) 10 , d ) 8.5 , e ) 6
b

Problem: a car covers a distance of 642 km in 6 hours . find its speed ?
Options: a ) 104 kmph , b ) 176 kmph , c ) 298 kmph , d ) 186 kmph , e ) 107 kmph
e