The ratio of story books and other books in club library is 4:3.The number of story books is 1248. Some story books are purchased and thus the ratio become 11:6 , How many story books purchased?
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11
Answer: 1716
Step-by-step explanation:
4 : 3 = 1248 : x (x is number of other books)
x = 3 x 1248/ 4
x = 936
Later, the ratio became 11 : 6
11 :6 = y : 936 (y is the number of story books left)
y = 11 x 936/ 6
y = 1716
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