SOLUTION: The 30 coins in Danielle's piggy bank have a value of at least $1.74. The bank contains only nickels and dimes. What is the fewest number of dimes that could be in the bank?

Question 888084: The 30 coins in Danielle's piggy bank have a value of at least $1.74. The bank contains only nickels and dimes. What is the fewest number of dimes that could be in the bank?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Nickels and dimes cannot make $1.74; but they can make $1.75.

and . You want the inequality to be expressed only in dimes.

; substitute this.

Divide members by 0.05.

.

Many values of d will give at least $1.75, but the smallest is .
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