Fred invited 3 more men than women to his party.
13 of the men and
56 of the women turned up at the party. A total of 17 adults who were invited did not turn up. How many adults did he invite?
|
Men |
Women |
Total |
Comparing men and women |
3 more |
|
|
Total |
3x2 = 6 u |
+ 3 |
6x1 = 6 u |
|
Turned up |
1x2 = 2 u |
+ 1 |
5x1 = 5 u |
|
Did not turn up |
2x2 = 4 u |
+ 2 |
1x1 = 1 u |
17 |
|
Men |
Women |
Total |
Total |
6 u |
+ 3 |
6 u |
|
Turned up |
2 u |
+ 1 |
5 u |
|
Did not turn up |
4 u |
+ 2 |
1 u |
17 |
13 x 3 = 1
3 - 1 = 2
Total number of adults in the end
= 4 u + 2 + 1 u
= 5 u + 2
5 u + 2 = 17
5 u = 17 - 2
5 u = 15
1 u = 15 ÷ 5 = 3
Number of adults that Fred invited
= 6 u + 3 + 6 u
= 12 u + 3
= 12 x 3 + 3
= 36 + 3
= 39
Answer(s): 39