Connie cracks open a piggy bank and finds $3.70 (370 cents), all in nickels and dimes. There are 7 more dimes than nickels. How many nickels does Connie have?

Answer 1

Connie has #20# nickles.

If we mark the number of nickles by #n#, then the number of dimes can be witten as #n+7#. The total amount $3.70 leads to an equation:

#5n+10(n+7)=370#

#5n+10n+70=370#

#15n+70=370#

#15n=300#

#n=20#

The answer is : Connie has #20# nickles (and #27# dimes).

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Answer 2

Noah Archer

Connie has 12 nickels.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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