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mafiozo [28]
3 years ago
15

Carol Ann buys a TV at 70% off the original price. If she pays $120, what was the original price of the TV?

Mathematics
2 answers:
Keith_Richards [23]3 years ago
5 0
If the TV is 70% off, then that means she paid 30% of the original cost.  If 30% of the original cost  is $120, then...

30% * x = 120
.30x = 120
x = 120/.30
x = 400

The original cost was $400
Lelechka [254]3 years ago
3 0
Original price x (100-70)/100 = $120

therefore; original price = 120 × 100/30 = $400
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