Hi love! I believe it’s A. If not please report back. Thank you!
Answer:
Her error was multiplying numerator by numerator ( that is Quantity of Bone-shaped treats)
Step-by-step explanation:
Sarah's calculation
Let
x = cost of 12 Bone-shaped treats
Quantity of Bone-shaped treats : price
5 : 3.5 = 12 : x
(5/3.5) = (12/x)
Cross product
3.5x=60 (Here is her error)
x=17.14
Correct calculation
Quantity of Bone-shaped treats : price
5 : 3.5 = 12 : x
5 / 3.5 = 12 / x
Cross product
5 * x = 3.5 * 12
5x = 42
x = 42 / 5
= 8.4
x = $8.4
Her error was multiplying numerator by numerator ( that is Quantity of Bone-shaped treats)
Instead of multiplying Quantity of Bone-shaped treats by cost
<u>Answer-</u>
The average U.S. public debt per American is approximately $29,400
<u>Solution-</u>
Given in the question,
U.S public debt as of October 2010 = $9.06×10¹²
Population of U.S in 2010 = 3.08×10⁸
We have to calculate the average U.S. public debt per American,
Therefore, the average U.S. public debt per American is $29,400 (after rounding off)
