Lynn's shop sold blouses and sweaters. The blouses were sold at $100 each and each sweater was sold at
45 of the price of each blouse. Lynn sold
12 of the items on the first day and collected $4200.
23 of the items sold on the first day were blouses.
- How many sweaters were sold on the first day?
- What was the total number of items left after the first day?
(a)
Sold |
Unsold |
Total |
1x3 |
1x3 |
2x3 |
Blouses |
Sweaters |
|
|
2x1 |
1x1 |
|
|
2 u |
1 u |
3 u |
6 u |
The total number of blouses and sweaters sold is repeated. Make the total number of blouses and sweaters sold the same. LCM of 3 and 1 is 3.
|
Blouses |
Sweaters |
Total |
Number |
2 u |
1 u |
3 u |
Value |
$100 |
$80 |
|
Total value |
200 u |
80 u |
280 u |
Cost of each sweater
=
45 x 100
= $80
Total amount collected from selling the blouses and the sweaters on the first day
= 200 u + 80 u
= 280 u
280 u = 4200
1 u = 4200 ÷ 280 = 15
Number of sweaters sold on the first day
= 1 u
= 15
(b)
Total number of items left after the first day
= 3 u
= 3 x 15
= 45
Answer(s): (a) 15; (b) 45