A worked work for 1 hour then he took rest for next 15 minutes In similar pattern he completed his e...........

Quantitative Aptitude (SBI-PO) Time and work

Directions: Refer the table given below and answer the the following questions with the help of Actual work done by persons A, B and C with the maximum time required by each to complete the work. Data about three persons A, B and C is given in the table below:

Person Actual work done Maximum time(in hours)

A 50 units 10

B 60 units 12

C 15

A worked work for 1 hour then he took rest for next 15 minutes. In similar pattern, he completed his entire duration of work. Then, find net efficiency of A in units per hour.

This questions was previously asked in

SBI PO Prelims (02 Jan, 2022)

View All SBIPO Previous Year Papers

30/4

60/7

75/8

50/8

None of the above

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Explanation:

Correct option 4: 50/8

Actual work done by A = 50 units Maximum time taken by A = 10 hours
Time taken by A to work = 1 hour
Time taken by A to rest = 15 min According to the question
⇒ 1 hour work = 15 mins rest
Then,
⇒ 4 hours work = (154) = 60 min = 1 hour rest
⇒ (4 × 2) hours work = (1 × 2) hour rest
⇒ 8 hours work = 2 hour rest
Now,
Net efficiency of A in unit per hour = [50/(4 + 4)]
⇒ 50/8