27 of the people are adults.
910 of the remainder are girls.
There are 10 more girls than adults.
How many people are there?
Adults |
Children |
2 x 2 |
5 x 2 |
|
Girls |
Boys |
|
9 |
1 |
4 u |
9 u |
1 u |
The number of children is the combined repeated identity.
Make the number of children the same by using LCM of 5 and 10.
LCM of 5 and 10 = 10
Number of girls = 9 u
Number of adults = 4 u
Number of more girls than adults
= 9 u - 4 u
= 5 u
5 u = 10
1 u = 10 ÷ 5 = 2
Total number of people
= 4 u + 9 u + 1 u
= 14 u
= 14 x 2
= 28
Answer(s): 28