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A nickel is 5 cents, and $2 is 200 cents. Thus you need 200/5 = 40 coins.
2 COINS
001 of a cent = 1 cent and you will need 100 of them to make a dollar.
Half of one.
To make 75 cents out of 10 coins, you need 6 dimes and 3 nickels.
A nickel is 5 cents and a dollar is 100 cents, so you need 100/5 = 20 coins.
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A nickel is 5 cents, and $2 is 200 cents. Thus you need 200/5 = 40 coins.
Three coins; 50, 25, and 1.
To make 5 dollars using 10 cent coins, you would need 50 coins. This is because there are 100 cents in a dollar, so you would need 500 cents to make 5 dollars. Dividing 500 by 10 (the value of each coin) gives you 50 coins needed to make 5 dollars.
To make 89 cents with 6 coins, you have to first realize that the "9" part of the cents is comprised of 5 cents and 4 pennies. Therefore, you have to have 4 pennies and 85 cents using 2 coins; impossible, since you would need 3 coins(if you had half-dollars) to make that amount: a half-dollar, quarter, and a dime. Basically, it's impossible with only coins worth 0.01, 0.05, 0.10, 0.25, and 0.50 of the currency(US$, I assume?)
a Dime. 10 cents
2 COINS
001 of a cent = 1 cent and you will need 100 of them to make a dollar.
You need 3 coins- the 50 cent piece, a dime, and a penny.
11 dollars x 100 cents = 1,100 cents