I’m not sure how to explain why this is the answer because it’s mostly math explanation, but the probability of having 75 in the interval (50,100) will be 1/50
500=350(1+0.04/12)^12x
Solve for x
500/350=(1+0.04/12)^12x
X=(Log(500/350)/log(1+0.04/12))/12
X=9 months
Answer:
12.........…....….................
Add 3 1/2 + 5/6 then divide your answer by 6