PSLE A company offered 160 juicers at 20% 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 five days of the sale?
- During the sale, the discounted price of the juicers was $8. 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 1 to Day 2.
On Day
2, the most number of juicers was sold.
(b)
Number of juicers that were left at Day
5 = 40 Number of juicers that were sold for the first five days = 160 - 40 = 120 Percentage of juicers that were sold for the first five days
=
120160 x 100%
= 75%
(c)
Number of juicers that were left at the end of the sale = 10
Number of juicers that were sold during the sale
= 160 - 10
= 150
Total amount that collected from the juicers sold
= 150 x 8
= $1200
Price of each juicer after 20% discount
= 100% - 20%
= 80%
80% of the price = 8
1% of the price = 8 ÷ 80 = 0.1
100% of the price = 100 x 0.1 = 10
Amount collected from selling the remaining juicers
= 10 x 10
= $100
Total amount collected from selling all the 160 juicers
= 1200 + 100
= $1300
Answer(s): (a) Day
2; (b) 75%; (c) $1300