Dear Tutor, I am having so much problem with percentages and fractions so can you please help me with these problems?

Can you please help me solve this problem:

What is 35% of a number if 12 is 15% of a number?

Can you please help me with this one as well?

If 45% is 120% of a number, what is 80% of the same number?

Thank You,

Donna

Can you please help me solve this problem:

What is 35% of a number if 12 is 15% of a number?

Can you please help me with this one as well?

If 45% is 120% of a number, what is 80% of the same number?

Thank You,

Donna

This question still have no answer summary yet.

What is 35% of a number if 12 is 15% of a number?
You can always do these problems by first finding how much 1% is.
If 12 if 15%, then 12/15 is 1%.
1% = 4/5.
Then, 35% is 35*(4/5) = 28.
-----------------------------
Can you please help me with this one as well?
If 45% is 120% of a number, what is 80% of the same number?
I don't think the 45 is a %.
45 is 120, so 1% is 45/120 = 3/8.
80% is 80*(3/8) = 30.

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