PSLE A company offered 80 kettles at 40% discount during a 7-day sale. The line graph shows the number of kettles left unsold at the end of each day.
- On which day was the most number of kettles sold? Give your answer in this format. (Eg Day 1)
- What percentage of the 80 kettles were sold in the first four days of the sale?
- During the sale, the discounted price of the kettles was $36. After the sale, the remaining kettles were sold without discount. What was the total amount of money collected from selling all 80 kettles?
(a)
The steepest line is from Day 2 to Day 3.
On Day 3, the most number of kettles was sold.
(b)
Number of kettles that were left at Day 4 = 44
Number of kettles that were sold for the first four days
= 80 - 44
= 36
Percentage of kettles that were sold for the first four days
=
3680 x 100%
= 45%
(c)
Number of kettles that were left at the end of the sale = 24
Number of kettles that were sold during the sale
= 80 - 24
= 56
Total amount that collected from the kettles sold
= 56 x 36
= $2016
Price of each kettle after 40% discount
= 100% - 40%
= 60%
60% of the price = 36
1% of the price = 36 ÷ 60 = 0.6
100% of the price = 100 x 0.6 = 60
Amount collected from selling the remaining kettles
= 24 x 60
= $1440
Total amount collected from selling all the 80 kettles
= 2016 + 1440
= $3456
Answer(s): (a) Day 3; (b) 45%; (c) $3456