SOLUTION: Hi stephanie had a total of 80 pieces of 2dollar and 10dollar notes. After spending 2/5 of her 2 dollar notes and 8 pieces of her 10 dollar notes, she had an equal number of 2 dol

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Question 1046947: Hi
stephanie had a total of 80 pieces of 2dollar and 10dollar notes. After spending 2/5 of her 2 dollar notes and 8 pieces of her 10 dollar notes, she had an equal number of 2 dollar and 10 dollar notes left. How much money did she have at first.
Thanks
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = pieces of 2 dollar notes she started with
+80+-+x+ = pieces of 10 dollar notes she started with
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She spent +%282%2F5%29%2Ax+ 2 dollar notes, so she has
+%283%2F5%29%2Ax+ left
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She has +80+-+x+-+8+ 10 dollar notes left
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+%283%2F5%29%2Ax+=+72+-+x+
+%288%2F5%29%2Ax+=+72+
+x+=+%285%2F8%29%2A72+
+x+=+45+
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+2x+=+2%2A45+
+2x+=+90+
and
+%28+80+-+x+%29%2A10+=+%28+80+-+45+%29%2A10+
+%28+80+-+x+%29%2A10+=+35%2A10+
+%28+80+-+x+%29%2A10+=+350+
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+90+%2B+350+=+440+
She started with $440
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check my math & get another opinion