Question

12.George is a salesperson in a jewelry store and earns $100 per week, plus 10% of his weekly sales. If George makes $425 in one week , what are his sales for that week?

a. $5,250
b. $4,250
c. $4,000
d. $3,250

14. The owner of a computer store received a shipment of computers at a cost of $319.85 each. If he sells the computers for $412.99 each , what is the percent of markup? Round to the nearest whole percent

a. 23%
b. 29%
c. 77%
d. 79%

16. Find the final balance in an account with $660 invested at 3.5% annual simple interest for five years.

a. $23.10
b. $115.50
c. $683.10
d. $775.50

my answers but please check anyways !

12) d
14) b
16) d

Answer 1

The answers in order are
D. $3250
B. 29%
C. $683.10

I know the first two are correct but not sure about the third
Let me know if you have any other questions ☺♥

Answer 2

12) D is correct. $3,250 is weekly sales of George.

14) B is correct. Markup the price by 29%

16) D is correct. Final balance = 660+115.5 = $775.5

Explanation:

Number 12) George is a salesperson in a jewelry store and earns $100 per week, plus 10% of his weekly sales.

Let us suppose his weekly sale $x

Total earn by a salesperson = 100+10% of x

We are given George makes $425 in one week.

Therefore, 100+10% of x = 425

Now solve for x

0.10x=425-100

x=$3250

Thus, $3,250 is weekly sales of George.

Number 14)

Computer store receive a computer cost = $318.85

Computer store sells a computer = $412.99

We need to find what % of price markup

First we find difference of price = 412.99 - 318.85 = $94.14

Now we find what % change =
`(Difference)/(Cost price)* 100`

Therefore, Markup percentage =
`(94.14)/(319.85)* 100\approx 29\%`

Thus, Markup the price by 29%

Number 16)

We are given initial balance in account $660 at 3.5% annual simple interest.

We need to find final balance in account after 5 years.

Formula: Simple Interest = Principle x Rate x Time

where, Principle, P=$660 ; Rate, R=0.035 ; Time, t=5

SI=660 x 0.035 x 5

SI=$115.5

Total amount in account = P+SI

Final balance = 660+115.5 = $775.5

Thus, Final balance = 660+115.5 = $775.5