15 of the people are children.
78 of the remainder are men.
There are 15 more men than children.
How many people are there?
Children |
Adults |
1 x 2 |
4 x 2 |
|
Men |
Women |
|
7 |
1 |
2 u |
7 u |
1 u |
The number of adults is the combined repeated identity.
Make the number of adults the same by using LCM of 4 and 8.
LCM of 4 and 8 = 8
Number of men = 7 u
Number of children = 2 u
Number of more men than children
= 7 u - 2 u
= 5 u
5 u = 15
1 u = 15 ÷ 5 = 3
Total number of people
= 2 u + 7 u + 1 u
= 10 u
= 10 x 3
= 30
Answer(s): 30