Bale read 60% of total number of pages in a book. The next day he read 80% of the remaining pages. If 40 pages of the book are yet to be read by him , find the total number of pages in the book.
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Answered by
8
Answer:
500 pages
Step-by-step explanation:
Let the number of pages be x. Then,
60% of Total Pages = x * 0.6
Remaining Pages for next day= x - 0.6x = 0.4x
80% of 0.4x = 0.4*0.8*x = 0.32x
Therefore x = 0.6x + 0.32x + 40
0.92x + 40 = x [remaining pages are 40]
40=0.08x
x= 40/0.08
x = 500
Therefore book consist of 500 pages.
Answered by
6
Step-by-step explanation:
Let total number of pages be x.
Book read today = 60% of x
Book read next day = 80% of 40% of x
= 32% of x
Pages remaining = 100% - 60% - 32% of x
= 8% of x
But remaining pages = 40
Therefore,
8% of x = 40
8/100 × x = 40
x = 4000/8
= 500
Book has 500 pages.
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