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ICE Princess25 [194]
3 years ago
13

A necklace is regularly sold for $18.00. The sore advertises a

Mathematics
1 answer:
Semenov [28]3 years ago
5 0

Answer: $17.91

Step-by-step explanation:

18.00 - 15% discount = 17.85

17.85 + 6% tax = $17.91

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a_sh-v [17]

Answer:

150 mL

Step-by-step explanation:

Let x represent the quantity of 75% solution needed. The total amount of alcohol in the 60% mixture will be ...

75%·x + 10%·45 = 60%·(x+45) . . . . . there will be x+45 mL of solution in the end

0.15x = 22.5 . . . . . . . . . . . . . . . . . . . . simplify, subtract .60x+4.5

22.5/0.15 = x = 150 . . . . . . . . . . . . . . mL of 75% solution needed

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