17 of the people are adults.
1112 of the remainder are girls.
There are 18 more girls than adults.
How many people are there?
Adults |
Children |
1 x 2 |
6 x 2 |
|
Girls |
Boys |
|
11 |
1 |
2 u |
11 u |
1 u |
The number of children is the combined repeated identity.
Make the number of children the same by using LCM of 6 and 12.
LCM of 6 and 12 = 12
Number of girls = 11 u
Number of adults = 2 u
Number of more girls than adults
= 11 u - 2 u
= 9 u
9 u = 18
1 u = 18 ÷ 9 = 2
Total number of people
= 2 u + 11 u + 1 u
= 14 u
= 14 x 2
= 28
Answer(s): 28