PSLEJustin had a number of necklaces for sale. He sold a total of 720 necklaces on Friday and Saturday. On Sunday, he sold
15 of the remainder. He was left with 8% of the necklaces he had at first. How many necklaces did he have at first?
Friday |
Saturday |
Remainder |
720 |
Sunday |
Left |
|
|
1 u |
4 u |
90%
|
2% |
8% |
Fraction of the remainder left
= 1 -
15 =
45Percent of total necklaces sold on Sunday
= 8% ÷ 4
= 2%
Percent of total necklaces sold on Friday and Saturday
= 100% - 8% - 2%
= 90%
90% = 720
1% = 720 ÷ 90 = 8
Total number of necklaces at first
= 100%
= 100 x 8
= 800
Answer(s): 800