Question

a boy reads 1/3of a book on the monday. ob the tuesday he reads 2/5 of the remaining portion. Wednesday he reads 20 pages are read , find how many pages are there in the book.​

Answer 1

Answer:

50 pages

Step-by-step explanation:

let total pages in book = x

total pages he  reads of a book on the monday = 1x/3

remaining portion. = x- 1x/3 = 2x/3

total pages he  reads of a book on the tuesday = 2x/3*2/5 = 4x/15

Wednesday he reads = 20 pages

we know,

x= 1x/3 + 4x/15+20

x = 9x/15 +20

x -9x/15 = 20

6x/15 =20

x = 20*15/6

x =50 pages