In the store,
14 of the books sold were Chinese books.
13 of the remaining books sold were Science books. The ratio of the number of Science books sold to the number of English books was 10 : 3. The number of Math books sold was 187. How many books were sold altogether?
Chinese |
Remaining books |
Total |
1x10 |
3x10 |
4x10 |
|
Science |
English |
Math |
|
|
1x10 = 10 u |
2x10 = 20 u |
|
|
10 |
3 |
|
|
10 u |
10 u |
3 u |
17 u |
40 u |
The number of Science books is repeated. Make the number of Science books the same. LCM of 1 and 10 is 10.
Number of Math books = 17 u
17 u = 187
1 u = 187 ÷ 17 = 11
Total number of books sold
= 40 u
= 40 x 11
= 440
Answer(s): 440