Jaylin S.
asked 02/18/21
The ratio of red pens to blue pens is 2 to 3. If there are 40 pens, how many are red?
Raymond B.
answered 02/18/21
Math, microeconomics or criminal justice
R:B = 2:3
R/B = 2/3, R=2B/3
R+B = 40
2B/3 + B = 40
5B/3 = 40
5B = 120
B = 120/5 = 24 blue
R = 40-24 = 16 red
16/24 = 2/3
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