X=4 ........................................
Answer:
100
Step-by-step explanation:
91+85+84+100 is 360
Divide that by 360, and you get 90, exactly.
I hope this helps!
Use c1v1+c2v2=c3v3
where c=concentration, v=volume.
C1=0.12
V1=20 L
C2=0.36
V2=X
C3=0.20
V3=20+X L
Substitute in equation
0.12(20) + 0.36X = 0.20(20+X)
Expand
2.4 + 0.36X = 4 + 0.2X
Simplify
(0.36-0.2)X = 4-2.4
0.16X = 1.6
X=1.6/0.16 = 10 L
check:
0.12(20)+0.36(10)=2.4+3.6=6.0
(20+10)*0.20 = 6.0 so solution is good.
Answer: Volume of 36% solution is 10L
C= number of children tickets
a= number of adult tickets
In the equation, $9.50 per ticket must be multiplied by each c and a in order to calculate the total.
($9.50 * c) + ($9.50 * a)
since each term has $9.50 in it, we can pull out the common $9.50 in each
$9.50(c + a)
this expression now means that we must multiply $9.50 by c and then multiply $9.50 by a (using the distributive property)
ANSWER: $9.50(c + a) - the second choice down
Hope this helps! :)
