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: two consultants can type up a report in 12.5 hours and edit it in 7.5 hours . if mary needs 30 hours to type the report and jim needs 12 hours to edit it alone , how many r hours will it take if jim types the report and mary edits it immediately after he is done ? 
Options: a ) 41.4 , b ) 34.1 , c ) 13.4 , d ) 12.4 , e ) 10.8

A: a
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Q: Problem: if 12 men do a work in 80 days , in how many days will 16 men do it ? 
Options: a ) 22 , b ) 87 , c ) 77 , d ) 60 , e ) 85

A: d
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Q: Problem: sides of a rectangular park are in the ratio 3 : 2 and its area is 4704 sq m , the cost of fencing it at 50 ps per meter is ? 
Options: a ) 287 , b ) 1287 , c ) 140 , d ) 988 , e ) 271

A:
c
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