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?
A)20
B)60
C)1500
D)6000

Question

Quizplus · Accepted Answer

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.

A Rectangular Carton in 10 Cm Long, 15 Cm Wide