Bridgett has 64 coins in nickels and dimes. What is the minimum number of dimes she should have to have at least $4.55? Set up the inequality and solve.

Thanks

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- Sep 9th 2010, 11:47 AMeunabugcoins/inequality word problem
Bridgett has 64 coins in nickels and dimes. What is the minimum number of dimes she should have to have at least $4.55? Set up the inequality and solve.

Thanks - Sep 9th 2010, 12:22 PMSoroban
Hello, eunabug!

Quote:

Bridgett has 64 coins in nickels and dimes.

What is the minimum number of dimes she should have to have at least $4.55?

Set up the inequality and solve.

Let: .

Then: . .[1]

The value of the coins is: . cents

. . which is to be at least 455 cents.

We have: . .[2]

Substitute [1] into [2]: .

. .

Therefore, Bridgett should have at least 27 dimes.