Question

A boy read 3/4 of the book on Monday and 4/5 of the remainder on Tuesday .if there were 30 pages unread how many pages did the book contains​

Answer 1

Answer:

A boy read 3/4 of pages on Monday ,

4/5 of the remainder pages on Tuesday ,

Carefully observe that he gave he read 4/5 of reaminder pages on Tuesday ; which means that 1/5 is left of the remaining pages , that 1/5 is 30 pages.

So , the 4/5 of remaining  pages are = 30 x4 = 120 pages,

and the total remaining are = 5/5 = 30 x 5 = 150 pages are the remaining pages.

And first he gave that he read 3/4 of the book , which means that  the remaining 1/4 = 120 pages ;

then the 3/4 pages  = 3 x 120

So , The pages he read on Monday = 360 pages ;

So the total pages = 360[ Monday ] + 120[Tuesday + remaining pages] pages ;

Total pages = 480 pages

So the book has 480 pages in total.

[ You will understand the problem better  if you assume that the fractions are parts of the book ; pages....]