110 of the people are adults.
1718 of the remainder are boys.
There are 15 more boys than adults.
How many people are there?
Adults |
Children |
1 x 2 |
9 x 2 |
|
Boys |
Girls |
|
17 |
1 |
2 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 9 and 18.
LCM of 9 and 18 = 18
Number of boys = 17 u
Number of adults = 2 u
Number of more boys than adults
= 17 u - 2 u
= 15 u
15 u = 15
1 u = 15 ÷ 15 = 1
Total number of people
= 2 u + 17 u + 1 u
= 20 u
= 20 x 1
= 20
Answer(s): 20