In a shopping centres,
811 of the customers were women. Within five minutes, 50 more women and 31 more men entered the shopping centres. As a result, there were 109 more women than men. How many customers were there altogether in the end?
|
Women |
Men |
Before |
8 u |
3 u |
Change |
+ 50 |
+ 31 |
After |
8 u + 50 |
3 u + 31 |
If there are another 109 men in the end, the number of men and women will be the same.
8 u + 50 = 3 u + 31 + 109
8 u - 3 u = 140 - 50
5 u = 90
1 u = 90 ÷ 5 = 18
Number of customers in the end
= 8 u + 50 + 3 u + 31
= 11 u + 81
= 11 x 18 + 81
= 198 + 81
= 279
Answer(s): 279