1 year ago

If a silver alloy that costs $4.50 an ounce is

Mathematics

2 answers:

Norma-Jean [14]1 year ago

7 0

Answer:

4 ounces

10 ounces of $8 + 4 ounces of $4.5 =$98 ÷ by 14 = $7

Nitella [24]1 year ago

5 0

6.5X + 9(30) = 8(30+X)6.5X +270 = 240 + 8X270-240 = 8X-6.5X1.5X = 30X = 30/1.5 =20 ounces of $6.50 alloy9 is within 1 of 86.5 is within 1.5 of 81.5 is 3/2 of 130 is 3/2 of 20You know you need more of $9 alloy since it's closer to $8You need exactly 3/2 or 1.5 times more of the $9 alloy30 is 1.5 times 20

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