Question

Mark purchased 3 assortment sets of fasteners and handed the cashier a $10 bill and $5 bill. The cashier gave back $4.23 in change. The fastener sets cost the same amount. What was the cost in dollars and cents for each set of fasteners?

A. $3.59
B. $5.00
C. $1.92
D. $4.23

Answer 1

A. $3.59

Step-by-step explanation:

10+5=15 dollars, that handed Mark

15-4.23 = 10.77 costs 3 sets of fasteners

10.77/3 = 3.59 cost each set of fasteners

Answer 2

Answer: $3.59 (choice A)

===========================================================

Step-by-step explanation:

10+5 = 15 dollars was handed over to the cashier.

He got back $4.23 in change, which means the total price is 15-4.23 = 10.77 dollars.

Divide this over 3 to find the cost of each fastener set.

10.77/3 = 3.59 dollars

----------------

An algebraic approach:

x = cost of 1 fastener set

3x = cost of 3 fastener sets

3x+4.23 = add on the change received

3x+4.23 = 10+5

3x+4.23 = 15

3x = 15-4.23

3x = 10.77

x = 10.77/3

x = 3.59 dollars