Zoe was attempting to read a book within a week. On Monday, she had read
16 of the book. By Friday, she had read another 119 pages and the ratio of the number of pages read to the total number of pages was 7 : 8. Find the average number of pages Zoe should have read each day to complete the book in a week.
|
Read |
Unread |
Total |
Monday |
1x4 = 4 u |
5x4 = 20 u |
6x4 = 24 u |
Change |
+ 119 |
- 119 |
|
Friday |
7x3 = 21 u |
1x3 = 3 u |
8x3 = 24 u |
Number of pages that Zoe read
= 21 u - 4 u
= 17 u
17 u = 119
1 u = 119 ÷ 17 = 7
Total number of pages
= 24 u
= 24 x 7
= 168
Average number of pages to read per day
= 168 ÷ 7
= 24
Answer(s): 24