Ajar contains 75 marbles. 3/5 of the marbles are black. what fraction of the marbles are black, using 75 as the denominator?

black marbles.

Step-by-step explanation:

A jar contains 75 marbles.

of the marbles are black.

We will multiply by 75 to get the number of black marbles.

The number of black marbles = × 75

                                                 = × 15

                                                = 45 marbles

45 marbles are black out of 75 marbles. so we can write black marbles.

answer: 48

just remember to use pemdas:

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