A boy read 2/7 th of a book on one day and 4/5 th of the remainder on another day. If there were 12 pages unread. How many pages in the book.
(a) 94
(b) 74
(C) 64
(d) 84
Answers
Answer ⤵️
imagine, total pages as x
imagine, total pages as x3/8 th of the book was read on the first day.
imagine, total pages as x3/8 th of the book was read on the first day.so, there are 5/8th of the pages left.
imagine, total pages as x3/8 th of the book was read on the first day.so, there are 5/8th of the pages left.on the second day, (4/5)(5/8) = (4/8)
imagine, total pages as x3/8 th of the book was read on the first day.so, there are 5/8th of the pages left.on the second day, (4/5)(5/8) = (4/8)totally, (3/8)+(4/8) = (7/8)th of the pages were completed and (1/8)th of the book is left which is given as 30.
imagine, total pages as x3/8 th of the book was read on the first day.so, there are 5/8th of the pages left.on the second day, (4/5)(5/8) = (4/8)totally, (3/8)+(4/8) = (7/8)th of the pages were completed and (1/8)th of the book is left which is given as 30.(1/8)(x) = 30
imagine, total pages as x3/8 th of the book was read on the first day.so, there are 5/8th of the pages left.on the second day, (4/5)(5/8) = (4/8)totally, (3/8)+(4/8) = (7/8)th of the pages were completed and (1/8)th of the book is left which is given as 30.(1/8)(x) = 30=> x= 240.
imagine, total pages as x3/8 th of the book was read on the first day.so, there are 5/8th of the pages left.on the second day, (4/5)(5/8) = (4/8)totally, (3/8)+(4/8) = (7/8)th of the pages were completed and (1/8)th of the book is left which is given as 30.(1/8)(x) = 30=> x= 240.so, totally, the book contains 240 pages.
Answer:
(d)84
Step-by-step explanation:
the boy had divided the book total into seven parts
2 parts in one day
and 4 parts on another day
remaining is one part that is 12 pages
one part is 12 pages
so,here we can get a equation
12 x 7
=84
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