There are twice as many adults as children in a tourist attraction, and there are twice as many boys as girls. If there are 1935 people in the tourist attraction,
- how many adults are there?
- how many children are there?
- how many boys are there?
Adults |
Children |
|
Girls |
Boys |
|
1 u |
2 u |
6 u |
3 u |
(a)
Number of girls = 1 u
Number of boys = 2 x 1 u = 2 u
Number of children = 2 u + 1 u = 3 u
Number of adults = 2 x 3 u = 6 u
People in the tourist attraction
= 3 u + 6 u
= 9 u
9 u = 1935
1 u = 1935 ÷ 9 = 215
Number of adults
= 6 u
= 6 x 215
= 1290
(b)
Number of children
= 3 u
= 3 x 215
= 645
(c)
Number of boys
= 2 u
= 2 x 215
= 430
Answer(s): (a) 1290; (b) 645; (c) 430