Question

There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is 7/9 . There are 42 red marbles in the bag and each is equally likely to be chosen. Work out how many marbles in total there must be.

Answer 1

Answer:

54 total marbles

Step-by-step explanation:

Look as you say that there are 42 red marbles, and you want to know how many are there in total.

So applying the unitary method of solving any sum we say 7=42 so 9=?

So we get 9x42=378 then dividing it by 7 we get 54.

Hope you understand.