2:4
4:8
5:10
200:400
This is because if you divide each ratio you get 1/2
Your answer would be 3/12
Probability that first student prefers mechanical pen = 0.30
P(first student does not and second student does) = 0.70 * 0.3 = 0.21)
P( selecting 2 or fweer) = 0.30+ 0.21) = 0.51 or 51%
Answer:
have you given the solution with questions or not
