Hey There,
Glenda is wrong, she is wrong because she wroth 4/10, that is close to 1/2 but it is not one half.
Hope I Helped
Answer:
25 % acid solution = 450ml
45% acid solution = 150ml
Step-by-step explanation:
Let
x = 25 % acid solution
y = 45% acid solution
x + y = 600
.25x + .45y = .30(600)
x + y = 600 (1)
.25x + .45y = 180 (2)
From (1)
x = 600 - y
Substitute x = 600 - y into (2)
.25x + .45y = 180
.25(600 - y) + .45y = 180
150 - .25y + .45y = 180
150 + .20y = 180
.20y = 180 - 150
.20y = 30
Divide both sides by .20
y = 30/0.20
= 150
y = 150ml
Substitute y = 150 into
x + y = 600
x + 150 = 600
x = 600 - 150
= 450
x = 450ml
25 % acid solution = 450ml
45% acid solution = 150ml
Are those supposed to be comas or decimal points , if they’re comas then i think the scientific notation would be 1.222 x 10^8
Answer:
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Linda should use ...
15 gallons of 80% juice
5 gallons of 60% juice
_____
Let g represent the number of gallons of 80% juice needed. Then (20-g) is the number of gallons of 60% juice Linda will use. The amount of juice in the mixture can be written as
0.80g +0.60(20 -g) = 0.75×20
0.20g = 20(0.75 -0.60) = 20×0.15
g = 20×0.15/0.20 = 15
The amount of 80% juice needed is 15 gallons, so 5 gallons of 60% juice are needed.
