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There are 20 cassettes.
Step-by-step explanation:
Given,
Ratio of cassette to compact disc = 10:3
Let,
the number of cassettes = 10x
Number of compact disc = 3x
According to given statement;
the number of cassettes is 10 less than 5 times the number of compact discs.
10x = 5(Number of CD) - 10
Dividing both sides by 5
Number of cassettes= 10x = 10(2) = 20
There are 20 cassettes.
Keywords: variable, ratio
Learn more about variables at:
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Answer:
Ratio of girls to students = 4 : 7
Step-by-step explanation:
Number of boys= 12
Number of girls= 16
Total number of students= 12+16= 28
Number of girls to number of students= =
Ratio of girls to students = 4:7
<em>Hope this helps.</em>