Answer:
<em>Grades to be scored in 3rd exam = 88</em>
Step-by-step explanation:
Given that average of 3 numbers is 85.
First two numbers are 81 and 86.
To find:
3rd number so that average is 85
Solution:
Let the third number = 
Formula for average is:
Here, sum of numbers = 
Total count of numbers = 3
<em>Grades to be scored in 3rd exam = 88</em>
Answer:
20 + 5m = 140
$24 on each day of the last five days
Step-by-step explanation:
Total amount to spend in 6 days = $140
He spent:
First day = $20
Balance = Total amount to spend - Amount spent on first day
= $140 - $20
= $120
He spent the same amount of money during the next five days.
Amount spent each day in the last 5 days = Balance / 5 days
= 120 / 5
= 24
Amount spent each day in the last 5 days = $24
The equation is
20 + 5m = 140
Where,
m = amount spent in the last five days
20 + 5m = 140
5m = 140 - 20
5m = 120
m = 120 / 5
m = $24
Answer:
Fraction: 1/ 5 n= 7
Step-by-step explanation:
To find n first you cross multiply : 2/ 10 * n / 35
= So we multiply 10 and n ( answer = 10n)
= Then 2 and 35 ( multiply) ( answer = 70)
Now algebra
70 = 10n
Divide both sides by 10
10n / 10 = 70 / 10
n = 7
The fraction becomes 7 / 35
When this is simplified the answer is 1 / 5
To simplify you divide the numerator and denominator of the fraction by 25 ( GCF )
HOPE THIS HELPED
