Question 148

Yesterday Priti type an essay of 5000 words at the speed of 60 words per minute: Today she type 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?

Solution

Priti's second day typing speed = $$\frac{115}{100} \times 60$$ = 69 wpm

Required difference in time

= $$(\frac{5000}{60} - \frac{5000}{69})$$

= $$5000(\frac{69 - 60}{60 \times 69})$$

$$\approx$$ 10 minutes

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