Quantitative Apptitude Exam - Time And Work Online Test 1
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Time And Work Full Exercise For All Exams : Only Frequently Asked Questions, Solution And Trick Part-1
IMPORTANT BASIC FORMULAS FOR TIME AND WORK: Work from Days: If A can do a piece of work in n days, then A's 1 day's work = 1 . n Days from Work: If A's 1 day's work = 1 , then A can finish the work in n days. n Ratio: If A is thrice as good a workman as B, then: Ratio of work done by A and B = 3 : 1. Ratio of times taken by A and B to finish a work = 1 : 3 Question for practice(LEVEL-1: Easy): 1. A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is : A. 1 4 B. 1 10 C. 7 15 D. 8 15 View Answer Answer: Option D Explanation: A's 1 day's work = 1 ; 15 B's 1 day's work = 1 ; 20 (A + B)'s 1 day's work = 1 + 1 = 7 . 15 20 60 (A + B)'s 4 day's work = 7 x 4 = 7 . 60 15 Therefore, Remaining work = 1 - 7 = 8 . 15 15 2. A can lay railway track between two given station...