the ratio of math's and science books in a school library is 4:5 if the number of science books is 75 find the number of math books
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Answer:
60 books
Step-by-step explanation:
X1 : Y1 : : X2 : Y2
4 : 5 : : X2 : 75
Product of means=Product of extremes
5 X2= 4×75
X2= 60
Ans. (no. of maths book=60)
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