There are 5 green, 4 orange, 7 purple and 4 blue gumballs in a gumball machine. If the probability of getting a purple gumball is the same in another machine that contains 300 gumballs how many are purple?

please I'm crying over this question :((( help. I'll mark brainiest.

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?