15 of the people in a museum are girls.
14 of the remainder are boys and the rest are adults. There are 560 more adults than boys. How many people are there in the museum altogether?
| Girls |
Boys |
Adults |
Total |
| 1 |
4 |
5 |
| |
1 |
3 |
|
| 1 u |
1 u |
3 u |
5 |
Fraction of the people that are boys and adults
= 1 -
15 =
45 Fraction of the remaining people that are adults
= 1 -
14 =
34 Total number of people = 5 u
Number of girls = 1 u
Number of boys = 1 u
Number of adults = 3 u
Number of more adults than boys
= 3 u - 1 u
= 2 u
2 u = 560
1 u = 560 ÷ 2 = 280
Total number of people
= 5 u
= 5 x 280
= 1400
Answer(s): 1400
