Answer:
6.25%
Explanation:
The formula for calculating interest rate is as follows
I= P x R x T
Where
I= interest, P= principal amount, T is time
in this case: I= $60.94, P=$975, T=1 year
Therefore:
$60.94 = $975 x( r/100) x 1
$60.94 =975(r/100) multiply both side by 100 to get rid of the fraction.
6094=975r
r = 6094/ 975
r = 6.2502
interest rate = 6.25%
Answer:
maximum income is $900
Explanation:
given data
oil change = $20
per day = 40 customer
increase = $ 2
dailer customers = 2
owner charge = $ 2
to find out
income from the business
solution
we know current income is 40 × 20
current income = $800
we consider here price increase x and income as function y
so y = (20 +2x) × ( 40 - 2x) ........1
y = −4x² + 40x + 800
take derivative and put dy/dx = 0 for maximum
dy/dx = -8x + 40
0 = -8x + 40
x=5
so here from 1
y = (20 +2x) × ( 40 - 2x)
y = (20 +2(5)) × ( 40 - 2(5))
y = 30 × 30
y = 900
so maximum income is $900
In the bank vault researve and at a Federal Reserve Bank
Selling price = $4.50
Copies sold = $1 million
Fixed costs = $1 million
Unit variable costs = $0.50 per magazine
Sales = $4,500,000
Fixed costs = $1 million
Variable costs = $500,000
Revenue = Sales - fixed costs - variable costs
Revenue = $4,500,000 - $1,000,000 - $500,000
Revenue = $3,000,000