Question

how many pages left unreas

Answer 1

in the first week he read 3/4 pages = 3/4 ×432=324pages.
Now remaining pages left unread = 432 - 324 = 108 .
In the second week he read 1/2 of the remaining pages = 1/2 ×108 = 54.
Thus pages left unread = 108 - 54 = 54

Answer 2

he read 3/4 of the total pages that means he read 324 pages during first week now the total number of pages left unread is 108 and now he read 1/2 of the pages which means 54 pages so the total number of unread pages left is 54..