PSLEZeph had a number of rings for sale. He sold a total of 680 rings on Wednesday and Thursday. On Friday, he sold
15 of the remainder. He was left with 12% of the rings he had at first. How many rings did he have at first?
Wednesday |
Thursday |
Remainder |
680 |
Friday |
Left |
|
|
1 u |
4 u |
85%
|
3% |
12% |
Fraction of the remainder left
= 1 -
15 =
45Percent of total rings sold on Friday
= 12% ÷ 4
= 3%
Percent of total rings sold on Wednesday and Thursday
= 100% - 12% - 3%
= 85%
85% = 680
1% = 680 ÷ 85 = 8
Total number of rings at first
= 100%
= 100 x 8
= 800
Answer(s): 800