Question

boy read ⅜ th of a book on one day and ⅘ th of the remainder on another day. If there were 30 pages unread, how many pages did the book contain?

Answer 1

Let the total pages be 'x' in number.

According to condition 1:
3/8*x read on first day.

So remaining pages will be :

1-3/8*x
=5/8*x

According to condition 2:
Read 4/5 of remaining
So left unread =1/5 of remaining

Therefore remaining at last=1/5 * 5/8*x
=1/8x

Unread=30
Therefore:1/8*x = 30
>> X=240.
Therefore total page is240

Answer 2

Answer:

Let the total pages be 'x' in number.

According to condition 1:

3/8*x read on first day.

So remaining pages will be :

1-3/8*x

=5/8*x

According to condition 2:

Read 4/5 of remaining

So left unread =1/5 of remaining

Therefore remaining at last=1/5 * 5/8*x

=1/8x

Unread=30  pages

Therefore:1/8*x = 30

X=240.

Therefore total page is240

Step-by-step explanation:

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