16 of the people are adults.
1315 of the remainder are girls.
There are 30 more girls than adults.
How many people are there?
Adults |
Children |
1 x 3 |
5 x 3 |
|
Girls |
Boys |
|
13 |
2 |
3 u |
13 u |
2 u |
The number of children is the combined repeated identity.
Make the number of children the same by using LCM of 5 and 15.
LCM of 5 and 15 = 15
Number of girls = 13 u
Number of adults = 3 u
Number of more girls than adults
= 13 u - 3 u
= 10 u
10 u = 30
1 u = 30 ÷ 10 = 3
Total number of people
= 3 u + 13 u + 2 u
= 18 u
= 18 x 3
= 54
Answer(s): 54