Pinki takes 55 min 20 s to cover her books with brown paper. The next day she covered her sister's books in 1 h 10 min 40 s. Whose books took a longer time to cover and by how much?
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Answer:
Sister's books took 920 s more to cover with brown paper than it took pinki's books to cover
Explanation:
Time taken by Pinki's books : 55 min 20s
= (55x60)+20 s
= 3320 s
Time taken by sister's books : 1 hr 10 min 40 s
= (1x60x60) + (10x60) + 40
= 3600 + 600 + 40
= 4240 s
As we can see her sister's books took longer time than pinki's books
4240 - 3320 = 920 s
Sister's books took 920 s more than pinki's book
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