PSLE A company offered 100 juicers at 10% discount during a 7-day sale. The line graph shows the number of juicers left unsold at the end of each day.
- On which day was the most number of juicers sold? Give your answer in this format. (Eg Day 1)
- What percentage of the 100 juicers were sold in the first four days of the sale?
- During the sale, the discounted price of the juicers was $36. After the sale, the remaining juicers were sold without discount. What was the total amount of money collected from selling all 100 juicers?
(a)
The steepest line is from Day 2 to Day 3.
On Day 3, the most number of juicers was sold.
(b)
Number of juicers that were left at Day 4 = 40
Number of juicers that were sold for the first four days
= 100 - 40
= 60
Percentage of juicers that were sold for the first four days
=
60100 x 100%
= 60%
(c)
Number of juicers that were left at the end of the sale = 20
Number of juicers that were sold during the sale
= 100 - 20
= 80
Total amount that collected from the juicers sold
= 80 x 36
= $2880
Price of each juicer after 10% discount
= 100% - 10%
= 90%
90% of the price = 36
1% of the price = 36 ÷ 90 = 0.4
100% of the price = 100 x 0.4 = 40
Amount collected from selling the remaining juicers
= 20 x 40
= $800
Total amount collected from selling all the 100 juicers
= 2880 + 800
= $3680
Answer(s): (a) Day 3; (b) 60%; (c) $3680