Ascent Education Home
Home | Question Bank | Top B-Schools | Mock CAT Tests | GD-PI | Notice Board | Contact us
Ascent's Courses
• CAT 2008 for IIMs
» CAT - Intensive Contact Class @ Chennai
» CAT - Weekend Crash Course
» CAT - Correspondence
• India
• Abroad
» Mock CAT Series
» CAT - Math & DI Boot Camp
» Math Shortcut Workshops
• TANCET 2008 @ Chennai
• TANCET 2008 @ Kovai
• XAT 2008
• GRE-GMAT
• US B Schools
• Faculty List
• Question A Day
Business Partnership
Jobs @ Ascent
Testimonials
Success Stories

Speed, Time and Distance - Quant/Math - CAT 2009

View Archives
  1. Algebra
  2. Progressions
  3. Averages
  4. Clocks and Calendars
  5. Data Sufficiency
  6. English Grammar
  7. Function
  8. Geometry
  9. Interest
  10. Mensuration
  11. Mixtures & Alligations
  12. Number System
  13. Percentages
  14. Permutation & Combination
  15. Pipes & Cisterns And Work & Time
  16. Probability
  17. Profit & Loss
  18. Races
  19. Ratio, Proportion
  20. Speed, Time & Distance
  21. Trigonometry
  22. Miscellaneous
  23. General Knowledge
Question 4 the day: November 17, 2003

The question for the day is from the topic of Speed, Time and Distance.
A man can row 50 km upstream and 72 km downstream in 9 hours. He can also row 70 km upstream and 90 km downstream in 12 hours. Find the rate of current.

(1) 3 km/hr (2) 8km/hr
(3) 4 km/hr (4) None of these
Correct Answer - (3)
Solution:


Let x and y be the upstream and downstream speed respectively.

Hence 50/x + 72/y = 9 and 70/x + 90/y = 12

Solving for x and y we get x = 10 km/hr and y = 18 km/hr

We know that Speed of the stream = 1/2 * (downstream speed - upstream speed) = 1/2 (18 – 10) = 4 km/hr.




› Page top        

  Home | Question Bank | Top B-Schools | US B-Schools | GD-PI | Forums | Bargain | Doubt Fire
  © 2002 - 08 ASCENT Education all rights reserved.