Answer:
- 48 oz of 90% (B)
- 72 oz of 65% (A)
Step-by-step explanation:
The amount of salt in the mixture is the sum of the amounts of salt in the constituents. Those amounts are found by multiplying the quantity of solution by the percentage that is salt.
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Let x represent the quantity of 90% salt solution B, in ounces. Then the number of ounces of salt in the mix is ...
0.90x +0.65(120 -x) = 0.75(120)
0.25x = 0.10(120) . . . . . . subtract 0.65(120) and simplify
x = 48 . . . . . . . . . . . . . divide by 0.25
120 -x = 72 . . . . . . . amount of 65% solution A
She should use 48 ounces of 90% solution B, and 72 ounces of 65% solution A.
Answer:
65
Step-by-step explanation:
5(6 + 7)
5 • 6 = 30
5 • 7 = 35
30 + 35 = 65
Answer: See explanation
Step-by-step explanation:
Let the wind chimes of the same number that would make her form 100 sea shells be represented by x.
From the information given in the question, this can be denoted as:
12x + 8x = 100
20x = 100
x = 100/20
x = 5
She'll need 5 wind chimes. Let's check
12x + 8x
12(5) + 8(5)
60 + 40 = 100
Answer:
that comes out as 12x + 6
Step-by-step explanation:
that's because the number before the brackets u time it by the number/s in the brackets and that gives the answer if you want a farther explanation message me