1.
45
35
234
3
2.
3 : 10
3 : 4
6 : 5
1 : 1
3.
3 : 4
1 : 2
7 : 8
2 : 6 : 5
4.
3 : 20
8 : 1
2 : 5
2 : 9
5.
x = 10
d = 8
x = 3
x = 2.25
6.
44 and 66
$25.50 and $59.50
20, 40 and 60

$120, 000
$180, 000

7.
70 km/h
14 km/L
$24/person
$33/person
8.
2,000 m/min
33.3 rev/min (to 1 d.p.)
3 g/cm3
$71.43/day (to 2 d.p.)