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Yesterday Priti typed an essay of 5000 words at speed of 60 words per minute. Today she typed the same essay faster and her speed was 15% more than yesterday. What is the approximate difference in the time she took to type yesterday and the time she took to type today?
The time taken by her to type 5000 words essay at a speed of 60words/min = 5000/60=83.33
Now when the speef is increased by 15%, the new speed = 69 words/min|
Time taken by her to type 5000 words essay with this speed = 5000/69 = 72.46
Time difference ~ 10 minutes
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