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According to the US Mint, the quarter is heaviest. Current weights: Quarter - 5.67 gm Nickel - 5.00 gm Dime - 2.27 gm
quarter dime dime quarter quarter dime nickel nickel dime
With no mint mark next to Monticello, or a "D", it's worth about a dime. If there's a small "S", it's worth about a quarter.
To answer your question, I will need to know the denomination - is this coin a nickel, dime, quarter, etc?
1 Quarter, 1 dime, 2 Nickel, 2 Pennies
A penny is 1/5 of a nickel, 1/10 of a dime, 1/25 of a quarter and 1/100 of a dollar. A nickel is 1/2 of a dime, 1/5 of a quarter and 1/20 of a dollar. A dime is 2/5 of a quarter and 1/10 of a dollar. A quarter is 1/4 of a dollar.
A dime is smaller than a nickel. A nickel is worth less than a dime. A dime has a ridged side, while a nickel is smooth and thicker.
A quarter is worth 25 cents, while a dime is worth 10 cents.
A nickel equals 5 cents; the dime 10 cents. Two nickels equals one dime in value. So the nickel is 50% of the dime.
The US Mint lists the following weights: Cent - 2.5 gm Nickel - 5.0 gm Dime - 2.27 gm Quarter - 5.67 gm Half - 11.34 gm "Golden" dollar - 8.1 gm
One coin is a quarter and the other one is a nickel. The quarter is NOT a nickel!
Aside from the fact that they're all made from copper and nickel in varying proportions, one dime = two nickels one quarter = five nickels; two dimes and one nickel; or one dime and three nickels.