Problema Solution
250 shoes sold of 2 styles. One cost 79.50, other 89.95. Total was 29,604. How many of each pair sold in the week?
Answer provided by our tutors
Style 1 shoes X
style 2 shoes Y
Total shoes sold x+y= 250
which can be written as x=250-y
Cost of style 1 shoes 79.50
Cost of style 2 shoes 89.95
Total cost 29604
Which is
79.5x+89.95y=29604
79.5(250-y)+89.95y=29604
19875-79.5y+89.95y=29604
10.45y=9729
Y=931
X=250-931
X=-681