There are 15 purple marbles, 3 pink marbles and 12 gray marbles. What is the ratio of purple marbles to all marbles?
2 answers:
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Because percentage is the numerator divided by the denominator of a fraction times one-hundred, we can set up this equation:
Now, we cross multiply.
Next, we divide both sides by 0.55 to get x by itself.
x = 60
So, 33 is 55% of 60.
Now, we cross multiply.
Next, we divide both sides by 0.55 to get x by itself.
x = 60
So, 33 is 55% of 60.