Hi!
First, find the total percent of vehicles with at least 3 people.
15% + 7% + 3% = 25%
Now find 25% of 420
Set up a proportion and cross multiply to solve.
![\frac{x}{420} \frac{25}{100}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B420%7D%20%5Cfrac%7B25%7D%7B100%7D%20%20)
25 * 420 = 10500
10500/100 = 105
The answer is 105 vehicles contained at least 3 people.
Hope this helped! :)
-Peredhel
Answer:
I am unable to see the photo
Step-by-step explanation:
Can you tell me the question?
Three unknowns requires three equations to solve . . .
1) n + d + q = 30
2) d = 2n
3) (0.05)n + (0.10)d + (0.25)q = 5.50
* plug 2) into 1) and solve for q
n + 2n + q = 30
3n + q = 30
q = 30 - 3n
* now we have variables d and q expressed in terms of n, so we plug those equations into 3) and solve for n . . .
0.05n + 0.10(2n) + 0.25(30 - 3n) = 5.50
0.05n + 0.20n + 7.50 - 0.75n = 5.50
(0.05 + 0.20 - 0.75)n + 7.50 = 5.50
-0.50n + 7.50 = 5.50
-0.50n = 5.50 - 7.50
-0.50n = -2.00
n = -2.00/-0.50 = 4
d = 2n = 2(4) = 8
q = 30 - 3n = 30 - 3(4) = 30 - 12 = 18
The answer is . . .
n = 4 nickels
d = 8 dimes
q = 18 quarters
. . . for a total of (4 + 8 + 18) = 30 coins
. . . 8 dimes is twice 4 nickels
. . . $0.05(4) + $0.10(8) + $0.25(18) = $5.50
Answer:
X=5
Y=3
(5,3)
Step-by-step explanation:
Solve using substitution
To arrange the numbers from greatest to least, we have to convert these first to similar format. I will convert the numbers to decimals:
26% = .26; 1/5 = .2; .3; .09
Now we can arrange from greatest to least -
.3, .26, .2, .09
Therefore, the correct arrangement is: .3, 26%, 1.5, .09