In the book shop,
13 of the books sold were Chinese books.
14 of the remaining books sold were Science books. The ratio of the number of Science books sold to the number of English books was 14 : 9. The number of Math books sold was 231. How many books were sold altogether?
Chinese |
Remaining books |
Total |
1x28 |
2x28 |
3x28 |
|
Science |
English |
Math |
|
|
1x14 = 14 u |
3x14 = 42 u |
|
|
14 |
9 |
|
|
28 u |
14 u |
9 u |
33 u |
84 u |
The number of Science books is repeated. Make the number of Science books the same. LCM of 1 and 14 is 14.
Number of Math books = 33 u
33 u = 231
1 u = 231 ÷ 33 = 7
Total number of books sold
= 84 u
= 84 x 7
= 588
Answer(s): 588