Practice Quiz

GMAT Math Practice Test #1

Category - Math

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A rectangular carton in 10 cm long, 15 cm wide and 5 cm high. If, the length, the width and the height each is doubled, what will be its volume, in cubic cm?
  1. 20
  2. 60
  3. 1500
  4. 6000
Explanation
Answer D: Volume V= length x width x height = l x w x h = 10x15x5= 750. The length, the width and the height each is doubled. Hence, Volume of new carton = 2 l x 2 w x 2h = 8 V = 8 x 750 = 6000 square cm.

Key takeaway: Sometimes, the actual arithmetical calculations are not required. You can apply logic and save time.
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