Can someone please help? I came up with 3/6.

14/33

Step-by-step explanation:

Okay so first of all, we want to find the probability of picking that first purple marble. There are 8 purple marbles you can chose out of a possible 12 marbles, so the probability is 8/12, or 2/3.

Next, find the probability of finding the second purple marble. Since you took out one purple marble already, there are 7 purple marbles you could chose out of a possible 11 marbles, so the probability is 7/11.

To find out the probability of both of these events happening, you multiply these probabilities:

you never say the total so we cant find the percentage used for petrol

step-by-step explanation: