Answer:
cost = $10
Step-by-step explanation:
let cost be x
Price = x+ (0.5x)= 1.50x
cost reduced in term of x is 20% of 1.50x
* 1.50x = 0.3x
hence 1.50x - 0.3x = 12
1.2x=12
x=
= 10
cost = $10
Step-by-step explanation:
multiply the ratio by the second ratios second number
Answer: 61.29%
Explanation:
10 cash + 14 debit + 38 credit = 62 overall
38/62 = 61.29%
Number of answer right divided by total number of questions:
17/20 = 85%
Answer:
a. 1965
b. 8 years
Step-by-step explanation:
For answers to questions like these it can work to consider the smallest possible dataset.
<h3>Dataset</h3>
For our purpose, consider the 9 years/values to be averaged to be ...
1, 2, 3, 4, 5, 6, 7, 8 ,9
<h3>Observations</h3>
a. The center value of the data set is 5. Its number is 5-1=4 more than the first one.
The first centered value is from the year 1961 +4 = 1965.
b. The 4 values at the beginning, and the 4 values at the end do not have a corresponding "average" value. That is, 4+4 = 8 values in the series are lost with respect to the number of average values.
8 years of values are lost.