1. 4
2. 6
3. 4.2
4. 2.2
6
1. 80 km
2. 70 km
3. 60 km
4. 50 km
50 km
1. 85 km/hr
2. 87.5 km/hr
3. 90 km/hr
4. 92.5 km/hr
87.5 km/hr
1. x(a-b-c)
2. 0.5
3. 1
4. x(a+b+c)
1
1. 3 : 4
2. 2 : 3
3. 1 : 2
4. 1 : 3
3 : 4
1. 0
2. 1
3. 0.5
4. 2
1
1. 16
2. 9
3. 4
4. 1
9
1. 8 kmph
2. 10 kmph
3. 12 kmph
4. 14 kmph
12 kmph
1. 210 miles
2. 230 miles
3. 250 miles
4. 260 miles
230 miles
1. 25n + 45n + 55n
2. (405)n
3. (40)n
4. (40n)5
(405)n