Rachel read
18 of a storybook on the first day,
421 of the remaining pages on the second day and the rest on the third day. If she read 28 more pages on the third day than on the first day, what is the total number of pages of the storybook altogether?
| First day |
Second day |
Third day |
Total |
| 1x3 |
7x3 |
8x3 |
| |
4 |
17 |
|
| 3 u |
4 u |
17 u |
24 u |
The number of pages read on the second day and the third day is the combined repeated identity. Make the total number of pages on the second day and the third day the same. LCM of 7 and 21 is 21.
Number of more pages on the third day than the first day
= 17 u - 3 u
= 14 u
14 u = 28
1 u = 28 ÷ 14 = 2
Total number of pages
= 24 u
= 24 x 2
= 48
Answer(s): 48
