Adress shop sold 150 dresses on sunday with sales receipts of $1. the plain dresses were sold for fifty dollar each while the dyed dresses were sold for seventy dollar each. how many of each type of dresses were sold?

plain dresses = 25

dyed dresses =125

Step-by-step explanation:

number of plain dresses - x

number of dyed dresses - y

X + Y = 150 (1)

50X + 70Y = 10000 (2)

(2)/50

X + 7/5 Y = 200 (3)

(3) - (1)

0 + 7/5Y - Y = 50

2Y = 250

Y = 125

; X = 25

Plain dresses =25, and dyed dresses= 125

Step-by-step explanation:

Let P rep the plain dresses, and D, the dyed ones,

P+D=150 (i)

50P+ 70D= 10000(ii)

Using equation i

P=150-D

Replace P in Equation ii

50(150-D)+ 70D =10000

7500-50P+70D=10000

20D= 2500

D= 125

Therefore; P=150-125= 25

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart