SOLUTION: A clerk has $3.60 in dimes and nickels in his cash register. If the number of dimes is 1 more than the number of nickels, How many dimes does he have?

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Question 550100: A clerk has $3.60 in dimes and nickels in his cash register. If the number of dimes is 1 more than the number of nickels, How many dimes does he have?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let n = number of nickels
Let d = number of dimes
given:
(1) +5n+%2B+10d+=+360+ ( in cents )
(2) +d+=+n+%2B+1+
----------------
(2) +n+=+d+-+1+
Substitute (2) into (1)
(1) +5%2A%28+d+-+1+%29+%2B+10d+=+360+
(1) +5d+-+5+%2B+10d+=+360+
(1) +15d+=+365+
(1) +d+=+24.333+
Something is wrong since d is not a whole number.
Did you copy it right. I don't see the mistake if
I made one.