PUZZLE 544

May 07, 2015 12:00 am | Updated 02:02 am IST

1. Elango sets up and burns a single CD in 3.5 minutes. If 70 minutes had been consumed, how many CDs would Elango have burnt? 

SOLUTION

Answer: 20

Explanation: It took 3.5 minutes to burn 1 CD. Hence if 70 minutes had been consumed then the number of CDs that were burnt would be 

(70 x 1)/3.5 = (70 x 2)/7 = 20. 

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