Respuesta :
Answer:
see below
Step-by-step explanation:
We can determine how much 12 ounces cost by using ratios
5 ounces 12 ounces
-------------- = -------------------
2.35 x
Using cross products
5x = 12*2.35
5x = 28.2
Divide each side by 5
5x/5 = 28.2/5
x =5.64
If she has 10 dollars
5 ounces y ounces
-------------- = -------------------
2.35 10
5*10 = 2.35y
50 = 2.35y
Divide each side by 2.35
50/2.35 = 2.35y/2.35
21.27659574 =y
She can buy 21.3 ounces
Answer:
$5.64; 21.3 ounces
Step-by-step explanation:
ounces : $
5 : 2.35
1 : X
X: the rate $ per ounce
1/5 = x/2.35
X = 0.47
a) 12 × 0.47 = 5.64
b) 0.47 = 10/n
n = 10/0.47
n = 21.2765957447