TCS Company Numerical Ability Time and Work

George and mark work for a comapny. George can finish a certain job in 30 days. Mark can finish the same job in 45 days. A project was taken by the company and George was made superior to Mark. This move from the company was not liked by mark. So Mark did not work for 15 days. Find the total number of days the entire work was completed if Mark works at his normal speed after 15 days from the date of commencement?
Option
a) 15
b) 20
c) 35
d) 24

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TCS Other Question

A,B,C can do some work in 36 days. A and B together can do twice as much work as C alone, and A and C together cand do thrice as much work as B alone. Find the time taken by C to do whole work?
Option
a) 96 days
b) 108 day
c) 120 days
d) 72 days
A person walks at 4km/hr for a particular duration T1 and 3km/hr for another duration T2 and covers a total distance of 36km. If he walks at 4km/hr for the duration T2 and at 3Km/hr for the duration T1, then he covers only 34km. What willl be the time taken by him to cover the one of the legs?
Option
a) 4hrs
b) 7hrs
c) 10hrs
d) 6hrs