Helen spent $15 on a skirt. She spent ⁴₁₁ of her remaining money on a shirt and a blouse, after which half her money was left.

1. What fraction of her money did she spend on the skirt?
2. The cost of the blouse is ¹₃ the cost of the shirt. How much more does the shirt cost than the blouse?

Skirt	Remaining amount
	Shirt	Blouse	Left
$15	4		7
1x7			1x7
3 u	4 u		7 u

(a)
The amount of money left is repeated. Make the numerators the same LCM of 1 and 7 is 7. 

1x72x7 of total money = 711 of remaining amount
714 of total money = 711 of remaining amount

Fraction of her money that she spent on the skirt
= ^Skirt_Total 
= ³₁₄ 

(b)
Cost of the skirt = 3 u

3 u = 15

1 u = 15 ÷ 3 = 5

Cost of the shirt and the blouse
= 4 u
= 4 x 5
= $20

Cost of the blouse = 1 p
Cost of the shirt = 3 p

Total cost of the blouse and the shirt 
= 1 p + 3 p
= 4 p

4 p = 20

1 p = 20 ÷ 4 = 5

Amount that the shirt was more than the blouse
= 3 p - 1 p
= 2 p
= 2 x 5
= $10

Answer(s): (a) ³₁₄; (b) $10