PSLE A company offered 200 kettles at 10% 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 200 kettles were sold in the first five days of the sale?
- During the sale, the discounted price of the kettles was $126. After the sale, the remaining kettles were sold without discount. What was the total amount of money collected from selling all 200 kettles?
(a)
The steepest line is from Day 1 to Day 2.
On Day
2, the most number of kettles was sold.
(b)
Number of kettles that were left at Day
5 = 60 Number of kettles that were sold for the first five days = 200 - 60 = 140 Percentage of kettles that were sold for the first five days
=
140200 x 100%
= 70%
(c)
Number of kettles that were left at the end of the sale = 30
Number of kettles that were sold during the sale
= 200 - 30
= 170
Total amount that collected from the kettles sold
= 170 x 126
= $21420
Price of each kettle after 10% discount
= 100% - 10%
= 90%
90% of the price = 126
1% of the price = 126 ÷ 90 = 1.4
100% of the price = 100 x 1.4 = 140
Amount collected from selling the remaining kettles
= 30 x 140
= $4200
Total amount collected from selling all the 200 kettles
= 21420 + 4200
= $25620
Answer(s): (a) Day
2; (b) 70%; (c) $25620