Question

There is a bag with only red marbles and blue marbles.
The probability of randomly choosing a red marble is 3/7
There are 12 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:

28 marbles

Step-by-step explanation:

"x" total number:

$x=\frac{12}{\frac{3}{7} } =\frac{(12)(7)}{3} =\frac{84}{3} =28$

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