Usha sold $1476 worth of windbreakers and vests. She earned $36 less on the vests than the windbreakers. Each vest is sold for $9 more than each windbreaker. The number of vests sold was ⁵₇ of the number of windbreakers sold.

1. How much did Usha earn from the sales of the windbreakers?
2. How many windbreakers were sold?

(a)
Amount that Usha earned from the sales of the windbreakers
= (1476 + 36) ÷ 2
= 1512 ÷ 2
= $756 

(b)
Amount that Usha earned from the sales of the vests
= 756 - 36
= $720

Number of sets of vests sold = 5  
Number of sets of windbreakers sold = 7

Cost of 1 set of vests sold
= 720 ÷ 5
= $144

Cost of 1 set of windbreakers sold
= 756 ÷ 7
= $108

Amount that 1 set of vests was more than 1 set of windbreakers 
= 144 - 108
= $36

Number of items in 1 set
= 36 ÷ 9
= 4

Number of windbreakers sold
= 7 x 4
= 28

Answer(s): (a) $756 ; (b) 28