Diana read
12 of the manual. If she had read another 24 pages, she would have read
78 of the whole manual altogether. How many pages were there in the manual?
|
Read |
Not read |
Total |
Before |
1x4 = 4 u |
1x4 = 4 u |
2x4 = 8 u |
Change |
+ 24 |
- 24 |
|
After |
7x1 = 7 u |
1x1 = 1 u |
8x1 = 8 u |
The total number of pages remains unchanged. Make the total number of pages the same. LCM of 2 and 8 is 8.
Number of additional pages that Diana would have read
= 7 u - 4 u
= 3 u
3 u = 24
1 u = 24 ÷ 3 = 8
Number of pages in the manual
= 8 u
= 8 x 8
= 64
Answer(s): 64