Always finding nickels means that you need to lighten up a little. By lightening up you will have more. For instance, the dime: half the weight but twice the value.
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5ct
If you mean in 30 cents, there are 6 nickels (30 cents / 5 cents = 6) If you mean 30 dollars, the answer is 600 nickels (3000 cents / 5 cents)
Assuming you mean $4.7094, then $4.7094/$0.05=94.188 or 94 nickels
It's not clear what "go into 1000" means. If you mean "How many nickels are in $1000", the answer is 20,000 because a dollar is equivalent to 20 nickels If you mean "How much are 1000 nickels worth?", the answer is $50. A nickel is worth $0.05 so 1000*0.05= 50.
If by 500 you mean 500 cents then : 50 dimes or 100 nickels or 20 quarters. If you mean 500 dollars then: 5,000 dimes or 10,000 nickels or 2,000 quarters.
If you mean how many? 1,000
Assuming you mean $80,000,000 - there are 20 nickels in one dollar (5 cents x 20 coins), so there would be 80,000,000 x 20 = 1,600,000,000 nickels.
2 nickels in a dime
You could have: 8 nickels and 1 penny or 6 nickels and 11 pennies or 4 nickels and 21 pennies or 2 nickels and 31 pennies. The option of 0 nickels and 41 pennies is excluded by the necessity that the amount is made up of dimes, nickels and pennies; 0 nickels would mean the $1.21 was made up of dimes and pennies only.
A nickel is worth 5 cents. If by "20" you mean 20 cents, you need 20 / 5 = 4 nickels. If you mean 20 dollars, a dollar is 100 cents so $20 = 2000 cents, and you'd need 2000 / 5 = 400 nickels.
finding money
The value of 5 quarters is 125 cents. Whether that is in dimes or whatever else, the value is always 125 cents. If, for some unknown and perverse reason, you want to use 5 quarters to buy nickels, then you'll get 5 nickels for each quarter, 25 nickels for all 5 quarters.