16 of the people are adults.
910 of the remainder are boys.
There are 21 more boys than adults.
How many people are there?
Adults |
Children |
1 x 2 |
5 x 2 |
|
Boys |
Girls |
|
9 |
1 |
2 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 boys = 9 u
Number of adults = 2 u
Number of more boys than adults
= 9 u - 2 u
= 7 u
7 u = 21
1 u = 21 ÷ 7 = 3
Total number of people
= 2 u + 9 u + 1 u
= 12 u
= 12 x 3
= 36
Answer(s): 36