Andy invited 9 more men than women to his party.
23 of the men and
45 of the women turned up at the party. A total of 19 adults who were invited did not turn up. How many adults did he invite?
| |
Men |
Women |
Total |
Comparing men
and women |
9 more |
|
|
| Total |
3x5 =
15 u |
+ 9 |
5x3 =
15 u |
|
| Turned up |
2x5 =
10 u |
+ 6 |
4x3 =
12 u |
|
| Did not turn up |
1x5 =
5 u |
+ 3 |
1x3 =
3 u |
19 |
| |
Men |
Women |
Total |
| Total |
15 u |
+ 9 |
15 u |
|
| Turned up |
10 u |
+ 6 |
12 u |
|
| Did not turn up |
5 u |
+ 3 |
3 u |
19 |
23 x 9 = 6
9 - 6 = 3
Total number of adults in the end
= 5 u + 3 + 3 u
= 8 u + 3
8 u + 3 = 19
8 u = 19 - 3
8 u = 16
1 u = 16 ÷ 8 = 2
Number of adults that Andy invited
= 15 u + 9 + 15 u
= 30 u + 9
= 30 x 2 + 9
= 60 + 9
= 69
Answer(s): 69
