29 of the people are adults.
1921 of the remainder are boys.
There are 13 more boys than adults.
How many people are there?
Adults |
Children |
2 x 3 |
7 x 3 |
|
Boys |
Girls |
|
19 |
2 |
6 u |
19 u |
2 u |
The number of children is the combined repeated identity.
Make the number of children the same by using LCM of 7 and 21.
LCM of 7 and 21 = 21
Number of boys = 19 u
Number of adults = 6 u
Number of more boys than adults
= 19 u - 6 u
= 13 u
13 u = 13
1 u = 13 ÷ 13 = 1
Total number of people
= 6 u + 19 u + 2 u
= 27 u
= 27 x 1
= 27
Answer(s): 27