Question

On my 30th birthday. I plan to light 30 candles on my cake and blow 30% of them. How many candles will stay lit after I’m done ?

Answer 1

IT'S VERY Easy

$30 \div 100 \times 30 = \\ 90 \div 30 = \\ =3 \\ hence \: she \: wil \: blow \: 3 \: candes|$

out of 30 candles she blow 3 candles

then she save :

$30 - 3= 27$

so she save 27 candles

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Answer 2

Answer:

Step-by-step explanation:

What do we need to do?

The number of lit candles decreased from 330 by 30%, percent.

We need to ask ourselves:

What number do we get if we decrease 30 by 30%, percent?

Finding the lit candles

Let's find the decrease first.

30% of 30= 100/30

Now, let's subtract 9 from 30 to get the candles lit

30 - 9 = 21

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21 candles will stay lit after I'm done.