Gem sold $1140 worth of jackets and dresses. She earned $540 less on the dresses than the jackets. Each dress is sold for $6 more than each jacket. The number of dresses sold was ²₇ of the number of jackets sold.

1. How much did Gem earn from the sales of the jackets?
2. How many jackets were sold?

(a)
Amount that Gem earned from the sales of the jackets
= (1140 + 540) ÷ 2
= 1680 ÷ 2
= $840 

(b)
Amount that Gem earned from the sales of the dresses
= 840 - 540
= $300

Number of sets of dresses sold = 2  
Number of sets of jackets sold = 7

Cost of 1 set of dresses sold
= 300 ÷ 2
= $150

Cost of 1 set of jackets sold
= 840 ÷ 7
= $120

Amount that 1 set of dresses was more than 1 set of jackets 
= 150 - 120
= $30

Number of items in 1 set
= 30 ÷ 6
= 5

Number of jackets sold
= 7 x 5
= 35

Answer(s): (a) $840 ; (b) 35