A number can be represented by n. So n/15≤450 then multiply both sides by 15 to get n by itself n≤6,750
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Answer:
16 mls of the 75% solution and 20 mls of the 0.57% solution.
Step-by-step explanation:
Set up a system of equations:
Let x = volume of 75% solution and y be volume of 57% solution
0.75x + 0.57y = 36*0.65
0.75x + 0.57y = 23.4.......(1)
x + y = 36.........(2)
From equation (2):
y = 36 - x
Substituting this into equation(1):
0.75x + (0.57(36 - x) = 23.4
0.75x + 20.52 - 0.57x = 23.4
0.18x = 23.40 - 20.52 = 2.88
x = 2.88/0.18
x = 16
so from equation (2): y = 36-16 = 20.
The answer is 2(2x-3)
Explanation: First you multiple 5 and 2 getting you ten
4x-10+4
Then you add -10 and 4 to get -6
4x-6
Finally you factor out the number to and divide both the 4 and -6
2(2x-3)
The fraction of people choosing veg was 1 - 1/3 - 5/12 = 1/4 and this was 23 people.
<span>Total guests 4*23 = 92</span>
