GMAT Question of the Day (Feb 11): Rate Problem and Sentence Correction

By - Feb 11, 02:00 AM Comments [1]

Math (PS)

Water flows into an empty tank of 54 liters via 12 small pipes. The rate of each pipe is 1 liter per hour. However, water flows out of the tank via several big pipes at the rate of 1.5 liter per hour. If after 12 hours, the tank is completely full, how many big pipes are there?

(A) 2.5
(B) 3
(C) 4
(D) 5
(E) 6

Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)

GMAT Daily Deals
  • Manhattan GMAT: 99 percentile teachers and superior curriculum at a more affordable price. Save @ GMAT Club. Save $325!
  • There's still a little time to save $50 on mbaMission Application Writing Bootcamps - Learn More. Learn More
  • The Princeton Review teaches both material & testing strategies - not just the answers. Save $350 @ GMAT Club. Learn More!

Verbal (SC)

In the 1980’s the rate of increase of the minority population of the United States was nearly twice as fast as the 1970’s.

(A) twice as fast as
(B) twice as fast as it was in
(C) twice what it was in
(D) two times faster than that of
(E) two times greater than

Question Discussion & Explanation
Correct Answer - С - (click and drag your mouse to see the answer)

Like these questions? Get the GMAT Club question collection: online at GMAT Club OR on your Kindle OR on your iPhone/iPad

Browse all GMAT Questions of the Day

Subscribe to GMAT Question of the Day: E-mail | RSS

Leave a Reply

[1] Comment to this Article

  1. Mohamed Sellamia February 13, 5:57 PM

    D.
    (12 – 1.5X) 12 = 54
    answer is X=5

    Reply