In the store,
13 of the books sold were English books.
15 of the remaining books sold were Math books. The ratio of the number of Math books sold to the number of Chinese books was 14 : 3. The number of Science books sold was 159. How many books were sold altogether?
English |
Remaining books |
Total |
1x35 |
2x35 |
3x35 |
|
Math |
Chinese |
Science |
|
|
1x14 = 14 u |
4x14 = 56 u |
|
|
14 |
3 |
|
|
35 u |
14 u |
3 u |
53 u |
105 u |
The number of Math books is repeated. Make the number of Math books the same. LCM of 1 and 14 is 14.
Number of Science books = 53 u
53 u = 159
1 u = 159 ÷ 53 = 3
Total number of books sold
= 105 u
= 105 x 3
= 315
Answer(s): 315