The mass of a single penny is approximately 2.5 grams. Therefore, the mass of 20 pennies would be 20 times 2.5 grams, which equals 50 grams.
20 cents is twenty pennies.
312.5g
Well, isn't that a happy little question! If you have 2000 pennies, you can exchange them for $20. That's because there are 100 pennies in a dollar, so when you have 2000 pennies, you have 20 groups of 100, which equals $20. Happy counting!
grams
Grams
20 cents is twenty pennies.
312.5g
Well, isn't that a happy little question! If you have 2000 pennies, you can exchange them for $20. That's because there are 100 pennies in a dollar, so when you have 2000 pennies, you have 20 groups of 100, which equals $20. Happy counting!
grams
Grams
10 pennies...
100 pennies = 1 British Pound 2,000 pennies = 20 British Pounds
x + y = 20 3.1x + 2.5y = 61.16 so from the first equation move the y to the other side x = -y + 20 Substitute into the second equation 3.1(-y + 20) + 2.5y = 61.16 -3.1y + 62 + 2.5y = 61.16 -.6y = -.84 y = 14 so x will be 6
25.0 grams
use a scale
a scale
1980 pennies = $19.80. $19.80 is worth almost $20.