Answer:
The combined average is 94%
Step-by-step explanation:
for first period, number of students =40
average =96%
for second period, no of students =20
average =90%
but
let =sum of students for the first period
=sum of students for the second period
for first period;
for second period,
therefore the combined average =
that is
so combined average is 94%
Answer:
a)The company has to 250 cameras in one day to equal its daily cost
b)Their daily profit will be $400
Step-by-step explanation:
Given:
overhead expenses = $1500
labour and materials expenses = $9
cameras sell for $15 each
To Find:
(a)How many cameras must the company sell in one day to equal its daily cost
(b) If the manufacturer can increase production by 50 cameras per day, what would their daily profit be?
Solution:
a) let the number of cameras sold per day be x
Total daily cost = overhead expenses +labour and materials expenses
Total daily cost = 1500 + 9x--------------------------(1)
Total daily revenue = 15x------------------------------(2)
Equating (1) and (2)
1500 + 9x = 15x
1500 = 15x- 9x
1500 = 6x
x=
x= 250
So, the company has to 250 cameras in one day to equal its daily cost.
b) increasing production by 50 cameras per day will give a daily profit of
=>50 X (17-9)
=>50 X 8
=> 400