PSLE A company offered 160 juicers at 30% 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 160 juicers were sold in the first four days of the sale?
- During the sale, the discounted price of the juicers was $84. After the sale, the remaining juicers were sold without discount. What was the total amount of money collected from selling all 160 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 = 80
Number of juicers that were sold for the first four days
= 160 - 80
= 80
Percentage of juicers that were sold for the first four days
=
80160 x 100%
= 50%
(c)
Number of juicers that were left at the end of the sale = 20
Number of juicers that were sold during the sale
= 160 - 20
= 140
Total amount that collected from the juicers sold
= 140 x 84
= $11760
Price of each juicer after 30% discount
= 100% - 30%
= 70%
70% of the price = 84
1% of the price = 84 ÷ 70 = 1.2
100% of the price = 100 x 1.2 = 120
Amount collected from selling the remaining juicers
= 20 x 120
= $2400
Total amount collected from selling all the 160 juicers
= 11760 + 2400
= $14160
Answer(s): (a) Day 3; (b) 50%; (c) $14160