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Work Time Practice Question - CAT 2012 Prep

The question for the day is from the topic Work and Time. The problems from the topic are similar to those of Pipes and Cisterns. So, if you understand the nature of one of these two types of questions, then you will be able to attempt the other quite comfortably.

Question 7

A and B working together can finish a job in T days. If A works alone and completes the job, he will take T + 5 days. If B works alone and completes the same job, he will take T + 45 days. What is T?

1. 25 days
2. 60 days
3. 15 days
4. 24 days
5. None of these
   
   

Correct Choice - (3). Correct Answer is 15 days

Explanatory Answer

When A and B work together, they will take = 15 days.

Where 5 and 45 are the extra time that A and B take to complete the job if they work alone compared to the time that they will take if they worked together.

CAT Practice Questions and Answers : Listed Topicwise

Number Theory		Permutation & Probability		Data sufficiency		Inequalities
Geometry		Mensuration		Trigonometry		Coordinate Geometry
Percentages		Profit Loss		Ratio Proportion		Mixtures Alligation
Speed Time Distance		Pipes Cisterns		Linear Quadratic		Races
Progressions, AP & GP		New Topic		New Topic		New Topic