<h2> <u><em>
answer: </em></u>21 is 70% of 30
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<h2><u><em>
Working out percentages
</em></u></h2><h2><u><em>
We have, 70% × x = 21
or, 70100 × x = 21
</em></u></h2><h2><u><em>
Multiplying both sides by 100 and dividing both sides by 70,
</em></u></h2><h2><u><em>
we have x = 21 × 100
70
x = 30
</em></u></h2><h2><u><em>
If you are using a calculator, simply enter 21×100÷70, which will give you the answer.</em></u></h2>
Answer:
$/sprt(#)(%)$)
Step-by-step explanation:
0 because there are no blue marbles.
