Subject
Quantitative Aptitude
Topic
Percentage
If there are 150 questions in a 3 hr examination. Among these questions 50 are type A problems, which requires twice as much as time be spent on the rest of the type B problems. How many minutes should be spent on type A problems ?
If there are 150 questions in a 3 hr examination. Among these questions 50 are type A problems, which requires twice as much as time be spent on the rest of the type B problems. How many minutes should be spent on type A problems ?
ক)
75 minখ)
82 minগ)
90 minঘ)
101 minExplanation
Let X = Time taken for each of Type B Problems(100 Problems) And 2X = Time taken for each of Type A problems(50 problems) Total time period = 3hrs = 3 x 60min = 180 minutes 100X + 50(2X) = 180 100X + 100X = 180 200X = 180 min X = 180/200 X = 0.90 min By convertiing into seconds, X = 0.90 x 60 seconds X = 54 sec So, time taken for Part A problems is = 54 x 2 x 50 = 5400 seconds = 5400/60sec = 90 minutes.Related questions
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