PSLE A company offered 100 kettles at 30% 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 100 kettles were sold in the first five days of the sale?
- During the sale, the discounted price of the kettles was $35. After the sale, the remaining kettles were sold without discount. What was the total amount of money collected from selling all 100 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 = 40 Number of kettles that were sold for the first five days = 100 - 40 = 60 Percentage of kettles that were sold for the first five days
=
60100 x 100%
= 60%
(c)
Number of kettles that were left at the end of the sale = 25
Number of kettles that were sold during the sale
= 100 - 25
= 75
Total amount that collected from the kettles sold
= 75 x 35
= $2625
Price of each kettle after 30% discount
= 100% - 30%
= 70%
70% of the price = 35
1% of the price = 35 ÷ 70 = 0.5
100% of the price = 100 x 0.5 = 50
Amount collected from selling the remaining kettles
= 25 x 50
= $1250
Total amount collected from selling all the 100 kettles
= 2625 + 1250
= $3875
Answer(s): (a) Day
2; (b) 60%; (c) $3875