PSLE A company offered 100 toasters at 10% discount during a 7-day sale. The line graph shows the number of toasters left unsold at the end of each day.
- On which day was the most number of toasters sold? Give your answer in this format. (Eg Day 1)
- What percentage of the 100 toasters were sold in the first four days of the sale?
- During the sale, the discounted price of the toasters was $153. After the sale, the remaining toasters were sold without discount. What was the total amount of money collected from selling all 100 toasters?
(a)
The steepest line is from Day 2 to Day 3.
On Day 3, the most number of toasters was sold.
(b)
Number of toasters that were left at Day 4 = 50
Number of toasters that were sold for the first four days
= 100 - 50
= 50
Percentage of toasters that were sold for the first four days
=
50100 x 100%
= 50%
(c)
Number of toasters that were left at the end of the sale = 15
Number of toasters that were sold during the sale
= 100 - 15
= 85
Total amount that collected from the toasters sold
= 85 x 153
= $13005
Price of each toaster after 10% discount
= 100% - 10%
= 90%
90% of the price = 153
1% of the price = 153 ÷ 90 = 1.7
100% of the price = 100 x 1.7 = 170
Amount collected from selling the remaining toasters
= 15 x 170
= $2550
Total amount collected from selling all the 100 toasters
= 13005 + 2550
= $15555
Answer(s): (a) Day 3; (b) 50%; (c) $15555