Problema Solution
The ratio of seventh graders to eighth graders participating in a science fair is 4:3. There are 18 eighth graders participating in the science fair. How many seventh graders are there?
Answer provided by our tutors
let x = the number of seventh graders participating in the science fair
the ratio of seventh graders to 18 eighth graders participating in a science fair is 4:3
x : 18 = 4 : 3
by solving we find
x = 24 seventh graders
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