Kylie was attempting to read a book within a week. On Monday, she had read
25 of the book. By Friday, she had read another 154 pages and the ratio of the number of pages read to the total number of pages was 8 : 9. Find the average number of pages Kylie should have read each day to complete the book in a week.
|
Read |
Unread |
Total |
Monday |
2x9 = 18 u |
3x9 = 27 u |
5x9 = 45 u |
Change |
+ 154 |
- 154 |
|
Friday |
8x5 = 40 u |
1x5 = 5 u |
9x5 = 45 u |
Number of pages that Kylie read
= 40 u - 18 u
= 22 u
22 u = 154
1 u = 154 ÷ 22 = 7
Total number of pages
= 45 u
= 45 x 7
= 315
Average number of pages to read per day
= 315 ÷ 7
= 45
Answer(s): 45