On Wednesday, Rael read
47 of a story book. On Thursday, he read 29 pages of the story book. On Friday, he read
35 of the remaining book leaving 22 pages unread.
- Find the number of pages read on Friday.
- Find the total number of pages in the story book.
(a)
Number of remaining unread pages after reading on Thursday = 5 u
Number of remaining unread pages after reading on Friday
= 5 u - 3 u
= 2 u
2 u = 22
1 u = 22 ÷ 2 = 11
Number of pages that Rael read on Friday
= 3 u
= 3 x 11
= 33
(b)
Working backwards.
Number of pages unread after reading on Thursday
= 5 u
= 5 x 11
= 55
Total number of pages in the story book = 7 p
Number of pages unread after reading on Wednesday
= 7 p - 4 p
= 3 p
3 p = 29 + 55
3 p = 84
1 p = 84 ÷ 3 = 28
Total number of pages in the story book
= 7 p
= 7 x 28
= 196
Answer(s): (a) 33; (b) 196