a boy reads 1/4 of a book on the first day. ob the second day he reads 1/3 of the remaing portion. what portiin of the book does the boy read in the two days ? if 100page are to be read , find how many pages are there in the book.
Answers
Part of book read by boy on 1st day =1/4
So remaining part of the book = 1 - 1/4 = 3/4
Part of book read by boy on 2nd day = 1/3 × 3/4 = 1/4
Total part of book read by boy in two days = 1/4 + 1/4 = 2/4 = 1/2
Left part of the book = 1/2
According to question
100 pages are left
So, 1/2 = 100 pages
So, total pages in book= 2 × 100 = 200 pages
Given : a boy reads 1/4 of a book on the first day.
on the second day he reads 1/3 of the remaining portion.
100 pages are left to be read
To Find what portion of the book does the boy read in the two days? find how many pages are there in the book?
Solution:
Let say total Pages in Book = 4B
boy reads 1/4 of a book on the first day
=> Read on 1st day = (1/4)4B = B
Remaining Pages = 4B - B = 3B
second day he reads 1/3 of the remaining portion.
=> Read on 2nd Day = (1/3)3B = B
Remaining Pages = 3B - B = 2B
Boys read in two days = 2B/4B = 1/2
Half Portion
2B = 100
=> B = 50
=> 4B = 200
There are 200 Pages in Book
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