HCL Question. Answer...

In a factory, there are two machines A and B. A machine can produce 1000 watts power in 5 hours and by running both the machines together can produce same watts power in 3 hours. Find the time taken by B machine alone to produce same watts of power. a) 5 hrs b) 7 hrs & 30 mins c) 6 hrs d) 6 hrs & 30 mins