21. Writing at her average speed, Shagun can fill4/15 of a page of her rough notebook in 1 minute. One
day she wrote a 24 page story in this notebook. If she wrote at her usual speed, how long did it take
her to write the story?
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Average speed=4/15
Time= 1 min
to find time
Explanation:
Page filled=4/15×1=4/15
Total pages=24
Time taken to fill page
24/4/15=24.15/4=90
Hence,she taken 90 min(1 hour 30 min)to write the story.
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