15 of the people are adults.
58 of the remainder are boys.
There are 12 more boys than adults.
How many people are there?
Adults |
Children |
1 x 2 |
4 x 2 |
|
Boys |
Girls |
|
5 |
3 |
2 u |
5 u |
3 u |
The number of children is the combined repeated identity.
Make the number of children the same by using LCM of 4 and 8.
LCM of 4 and 8 = 8
Number of boys = 5 u
Number of adults = 2 u
Number of more boys than adults
= 5 u - 2 u
= 3 u
3 u = 12
1 u = 12 ÷ 3 = 4
Total number of people
= 2 u + 5 u + 3 u
= 10 u
= 10 x 4
= 40
Answer(s): 40