Question
John is an avid reader. He devours 90 pages in half an hour. He can read ________ pages in 5 minutes.
- 5
- 4
- 8
- 15
Hint:
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
The correct answer is: 15
Here, it is given that John reads 90 pages in half hour. We have to find the number of pages he reads in 5 minutes.
Number of pages read in 30 minutes = 90.
Number of pages read in 1 minute = 90/30 = 3.
Number of pages read in 5 minutes = 3×5 = 15.
Hence, the correct option is D.
We can find the number of pages read in 5 minutes by simply dividing the number of pages read in 30 minutes by 6.
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