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: ajay can ride 50 km in 1 hour . in how many hours he can ride 1250 km ? 
Options: a ) 10 hrs , b ) 15 hrs , c ) 20 hrs , d ) 25 hrs , e ) 18 hrs
d

Problem: if the wheel is 28 cm then the number of revolutions to cover a distance of 1056 cm is ? 
Options: a ) 3 , b ) 5 , c ) 26 , d ) 12 , e ) 6
e

Problem: a flagstaff 17.5 m high casts a shadow of length 40.25 m . the height of the building , which casts a shadow of length 28.75 m under similar conditions will be : 
Options: a ) 10 m , b ) 12.5 m , c ) 17.5 m , d ) 21.25 m , e ) none

b