What is the percent of seven pennies of a dollar?

Depends on the penny. A wheat penny in good condition may bring in a few thousand dollars. Some are advertised for $5000, but they are worth only what someone is willing to pay for them.

If 10% is 2600 dollars the answer to your question is 5200 dollars.

Percent is just one divided by 100, then multiply. That's why the symbol looks like a division by 00. So just move the decimal point over three places, or .001 and .0012 and multiply. Or the easy way is to google 1.1 percent and 1.2 percent.

Depends on the condition, the 1909 could be 1 cent to 10 dollars.
The other one is ambiguous. Do you mean a 1994 dollar? If so, there is nothing special potentially about those.

It should be 1:4. Reasons
A quarter equals to 25 pennies and a 100 pennies are equal to 1 dollar. So having these sorted out means 1:4

I don't know if it has changed, but we used to say "of" means
"times" and percent means "per cent" or "per one hundred" (100 pennies in a dollar)so to convert a percent to a fraction, we just divide it by 100.

Thus we have 20% x $60 or 20/100 x 60 or $12.
Good luck,
Paul

four hundred thousand seven hundred fifty dollars and seven cents.

0.0162% of $12,500 is $2.025 (two dollars two and a half cents).

Or did you mean 0.0162 of $12,500? That would be $202.50.

One percent of $34,000 is $340.