Todd knows that the ratio of boys to girls in class is 3:5. Since 12 of the students are boys, he says there must be 36 students in his class. Is he right? Explain your thinking?
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Answer:
20 girls
Step-by-step explanation:
slove this using faractions form.
let x be the number of girls
boys 3/2 = 5/x girls
cross mutiplication
3x= ( 12×5)
3x= 60
to slove for x, divide both sides by 3
3x/ 3= 60/3
x=20
12/20 × 3/5 or 3:5
HOPE IT HELPS YOU
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