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Question

A can do13 of work in 5 days and B can do 25 of the work in 10 days.In how many days can both A and B together do the work?
  1. 734
  2. 845
  3. 10 days
  4. 938

A
734
B
845
C
938
D
10 days
Solution
Verified by Toppr

A's rate in Work days: (135)=(1313)=115

B's rate, in Work days: (2510)=(25110)=250=125

LCM of rates of A, 115 , and B, 125 is 150.

combine rate of A and B:(10150+6150)=16150=875

workrate=time

1875=time

time=758=938

So, option (c) is correct.

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