In the bookstore,
16 of the books sold were Chinese books.
15 of the remaining books sold were English books. The ratio of the number of English books sold to the number of Math books was 13 : 3. The number of Science books sold was 98. How many books were sold altogether?
| Chinese |
Remaining books |
Total |
| 1x13 |
5x13 |
6x13 |
| |
English |
Math |
Science |
|
| |
1x13 =
13 u |
4x13 =
52 u |
|
| |
13 |
3 |
|
|
| 13 u |
13 u |
3 u |
49 u |
78 u |
The number of English books is repeated. Make the number of English books the same. LCM of 1 and 13 is 13.
Number of Science books = 49 u
49 u = 98
1 u = 98 ÷ 49 = 2
Total number of books sold
= 78 u
= 78 x 2
= 156
Answer(s): 156
