1.
|
4⁄5
|
3⁄5
|
23⁄4
|
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 |
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.)
|