Saturday, January 10, 2015

Essay typing Math Puzzle

Yesterday Praveen typed an essay of 5000 words at the speed of 60 words per minute. Today he typed the same essay faster and his speed was 15% more than yesterday. 

What is the approximate difference in the time he took to type yesterday and the time he took to type today?

(1) 20 minutes           (2) 30 minutes
(3) 10 minutes           (4) 40 minutes
(5) 1 hour


Watch this space for answer in a week.

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