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PtichkaEL [24]
3 years ago
6

A shop owner bought 30 folders and some journals. He paid $82.50 for the folders. Each journal cost 10 times as much as a folder

. What was the cost of each journal?
Mathematics
1 answer:
AlexFokin [52]3 years ago
6 0
To find the cost of each folder first:
30/82.50 = 1/x
cross multiply:
30x = 82.50
find x.
x = 2.75
a journal is 10 times as much as a folder.
multiply.
2.75*10=27.50
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For rotation 180° about the origin, the signs of both the x any y coordinates are changed.
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