Answer:
B 16 : 24
Step-by-step explanation:
8 : 12 => when multiply by 2 = 16 : 24
Answer:
Step-by-step explanation:
Set up two equations with the information given-- and things you know from experience: a penny is worth 1 cent and a nickel is worth 5 cents. $ 2.38 is 238 cents (so you can eliminate decimals for now)
Put those values into an equation about the total value:
p + 5n = 238
and you know the total number of coins is 66.
p + n = 66
get a value for p by "solving" (subtract n from both sides)
p = 66-n
Substitute that value for p in the first equation. Then solve.
(66 -n) + 5n = 238
4n = 238-66 Then isolate n by dividing both sides by 4
n = 172/4
n = 43 Substitute that in the second equation, then solve for p
p + 43 = 66 p = 66 - 43
p = 23
So Chuck has 23 pennies and 43 nickels
You can use proportions to solve this.
![\frac{4}{7} = \frac{160}{x}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B7%7D%20%20%3D%20%20%5Cfrac%7B160%7D%7Bx%7D%20)
Cross multiply
![4x = 7 \times 160](https://tex.z-dn.net/?f=4x%20%3D%207%20%5Ctimes%20160)
Divide by 4
![x = \frac{7 \times 160}{4}](https://tex.z-dn.net/?f=%20x%20%3D%20%5Cfrac%7B7%20%5Ctimes%20160%7D%7B4%7D%20)
Now solve
![x = 280](https://tex.z-dn.net/?f=x%20%3D%20280)
There are 280 dolls
72 square units.
10 x 12= 120
6 x 8 = 48
120 - 48 = 72.
Hope this helps. :)
Answer:
720
Step-by-step explanation:
468 = 65% of the original price
So,
468÷ 0.65 = 720 $. Just to be sure 720*0.35 = 468