Answer: -67.35%
Step-by-step explanation:
<span>8 5/9 + 1 1/5
8+1 = 9
5/9 + 1/5 = 25/45 + 9/45 = 34/45
9 34/35 is the answer</span>
The bag contains,
Red (R) marbles is 9, Green (G) marbles is 7 and Blue (B) marbles is 4,
Total marbles (possible outcome) is,

Let P(R) represent the probablity of picking a red marble,
P(G) represent the probability of picking a green marble and,
P(B) represent the probability of picking a blue marble.
Probability , P, is,


Probablity of drawing a Red marble (R) and then a blue marble (B) without being replaced,
That means once a marble is drawn, the total marbles (possible outcome) reduces as well,

Hence, the best option is G.
4%=0.04
0.04x£3500=£140
£140x3=£420