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: it costs $ 6 for the first 1 / 4 hour to use the copier at kinkos . after the first hour it costs $ 8 per hour . if a certain customer uses the copier for 4 hours and 25 minutes , how much will it cost him ?
Options: a ) $ 23.45 , b ) $ 65.33 , c ) $ 40 , d ) $ 38.27 , e ) $ 39.33
e

Problem: a can do a piece of work in 4 hours ; b and c together can do it in 2 hours , while a and c together can do it in 2 hours . how long will b alone take to do it ?
Options: a ) 12 , b ) 9 , c ) 8 , d ) 6 , e ) 4
e

Problem: a train speeds past a pole in 15 sec and a platform 130 m long in 25 sec , its length is ?
Options: a ) 195 , b ) 150 , c ) 160 , d ) 170 , e ) 180
a