In a supermarket, 60% of the number of vegetables sold were sweet potatoes and the rest were onions. Each sweet potato cost 25¢ and each onion cost 10¢ less than the cost of each sweet potato. Given that $270.90 was collected from the sale of the vegetables,
- How many sweet potatoes were sold?
- How much was collected from the sale of the onions only?
(a)
|
Sweet Potatoes |
Onions |
Number |
3 u |
2 u |
Value |
$0.25 |
$0.15 |
Total value |
0.75 u |
0.3 u |
60% =
60100 =
35Cost of each onion
= 0.25 - 0.10
= $0.15
Total cost of the vegetables
= 0.75 u + 0.3 u
= 1.05 u
1.05 u = 270.90
1 u = 270.90 ÷ 1.05 = 258
Number of sweet potatoes sold
= 3 u
= 3 x 258
= $774
(b)
Amount collected from the sale of onions
= 0.3 u
= 0.3 x 258
= $77.40
Answer(s): (a) 774; (b) $77.40