Question

Ram and sham together were assigned a data entry job by a leading software company to be completed in 5 days. Sham’s speed is 80% of Ram’s speed and the total key depressions in the task assigned are 576000. Calculate Ram’s speed in key depressions per hour if they work for 8 hours a day?

1. 8000 
2. 10000
3. 5000
4. 6000
5. None of these

Answer 1

Correct Answer - Option 1 : 8000 

Given:

Work should completed in 5 days.

They work 8 hours per day.

 Sham’s speed is 80% of Ram’s speed.

 The total key depressions in the task assigned = 576000.

Formula

Speed = total work / total time

Calculation:

Let the key depression per hour for Ram = X

Then the key depression per hour for Sham = 0.8X

In one day they work 8 hours and they work for 5 days.

In one day they will work = 8 × (X + 0.8X)

⇒ 8X + 6.4X = 14.4X

In five days  = 14.4X × 5 = 72X key depressions.

⇒ 72X = 576000

⇒ X = 576000/72

⇒ X = 8000

∴ Ram's speed is 8000 depressions per hour