In a shopping centres,
711 of the customers were women. Within five minutes, 69 more women and 21 more men entered the shopping centres. As a result, there were 99 more women than men. How many customers were there altogether in the end?
|
Women |
Men |
Before |
7 u |
4 u |
Change |
+ 69 |
+ 21 |
After |
7 u + 69 |
4 u + 21 |
If there are another 99 men in the end, the number of men and women will be the same.
7 u + 69 = 4 u + 21 + 99
7 u - 4 u = 120 - 69
3 u = 51
1 u = 51 ÷ 3 = 17
Number of customers in the end
= 7 u + 69 + 4 u + 21
= 11 u + 90
= 11 x 17 + 90
= 187 + 90
= 277
Answer(s): 277