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
3s + h = $47
7s + 2h= $107
3s + h =$47
3s - 3s + h = $47 -3s
h = $47 - 3s
7s + 2($47 - 3s) = $107
7s + 94 -6s = 107
s + 94 = 107
s +94 -94 = 107- 94
s = 13
3(13) + h = $47
39 + h =$47
39 -39 + h= $47-39
h = 8
Check
7s + 2h= $107
7(13) + 2(8)= $107
91 + 16= 107
107 = 107
She earns $13 per suit sold and $8 per pair of shoes sold.
Step-by-step explanation:
First, add or subtract both sides of the linear equation by the same number.
Secondly, multiply or divide both sides of the linear equation by the same number.
Answer:
4 /25
Step-by-step explanation:
Given that :
Cup of vinegar used per recipe = 1/5 cup
Amount of vinegar to be used for 4/5 of a recipe ;
1 cup recipe = 1/5 cup vinegar
4/5 cup recipe = x
Cross multiply :
x = 1/5 * 4/5
x = 4/25 cup
Hence, Sandeep will use 4/25 cup of vinegar
Answer:
25 mL
Step-by-step explanation:
You subtract the amount of water in the cylinder with the rock, from the amount of water in the cylinder without the rock. The equation is 75mL - 50 mL
