You wallet contains 39 coins , consisting entirely of nickels and dimes , worth a total of $2.55. How many nickels are in the jar
+36916 n = nickels value 5n
d = dimes = 39 - n value 10(39-n) summed = 255
5n + 10(39-n) = 255
-5n = -135
n=27
You wallet contains 39 coins , consisting entirely of nickels and dimes , worth a total of $2.55. How many nickels are in the jar
Is this a gotcha trick question? You say 39 coins in my wallet, then ask how many nickels in a jar. This is impossible to tell from the facts that are provided. It reminds me of the question: if an airplane crashes exactly on the border between Texas and Oklahoma, in which state would the survivors be buried? Well, of course you don't bury survivors. And I don't know how many nickels are in the jar.
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