17 of the people are adults.
1718 of the remainder are girls.
There are 28 more girls than adults.
How many people are there?
Adults |
Children |
1 x 3 |
6 x 3 |
|
Girls |
Boys |
|
17 |
1 |
3 u |
17 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 18.
LCM of 6 and 18 = 18
Number of girls = 17 u
Number of adults = 3 u
Number of more girls than adults
= 17 u - 3 u
= 14 u
14 u = 28
1 u = 28 ÷ 14 = 2
Total number of people
= 3 u + 17 u + 1 u
= 21 u
= 21 x 2
= 42
Answer(s): 42