Time and Work Practice Test 1 with solutions

Question : 19 of 40

Marks: +1, -0

Albela, Bob and Chulbul have to read a document of seventy-eight pages and make a presentation the next day. They realize that the article is difficult to understand and they would require a team work to finish the assignment. Albela can read a page in 2 minutes, Bob in 3 minutes and Chulbul in 4 minutes. If they divide the article into 3 parts, so that all the three of them spend the equal amount of time on the article, the number of pages that Bob should read is

Validate

Solution:

Albela’s 1 minute work =

1/2

Bob’s 1 minute work =

1/3

Chulbul’s 1 minute work =

1/4

Total work done in 1 minute =

1/2 + 1/3 + 1/4

{6 + 4 + 3}/{12}

{13}/{12}

Total number of pages = 78

{13}/{12}

of work is done in 1 minute = 1
78 pages are read in 1 minute =

{12}/{13} × 78

= 72
Number of pages that Bob should read =

1/3 × 72

= 24 pages

Go to Question:

Prev Question

Next Question