PSLEIan had a number of rings for sale. He sold a total of 170 rings on Tuesday and Wednesday. On Thursday, 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?
Tuesday |
Wednesday |
Remainder |
170 |
Thursday |
Left |
|
|
1 u |
4 u |
85%
|
3% |
12% |
Fraction of the remainder left
= 1 -
15 =
45Percent of total rings sold on Thursday
= 12% ÷ 4
= 3%
Percent of total rings sold on Tuesday and Wednesday
= 100% - 12% - 3%
= 85%
85% = 170
1% = 170 ÷ 85 = 2
Total number of rings at first
= 100%
= 100 x 2
= 200
Answer(s): 200