4

# In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. What is the duration of the flight ?

3 hours

2.4 hours

1.4 hours

1 hour

D. 1 hour

Let the duration of the flight be x hours.
Then

$x\left(2x+1\right)=3$
$2{x}^{2}+x-3=0$

Neglecting the negative value for x we get x = 1

4

35.55 km/hr

36 km/hr

71.11 km/hr

71 km/hr

4

7:15 am

7:30 am

7: 42 am

7:50 am

4

3 hours

2.4 hours

1.4 hours

1 hour

4

8 kmph

11 kmph

12 kmph

14 kmph

4

3.6

7.2

8.4

10

4

2 : 3

3 : 2

3 : 4

4 : 3

4

9

10

12

20

4

5 kmph

6 kmph

6.25 kmph

7.5 kmph

4

44 km/hour

46 km/hour

48 km/hour

50 km/hour

4

70.11 km/hr

71.11 km/hr

72.11 km/hr

73.11 km/hr

4

50 meter

100 meter

110 meter

None of above

4

10 am

11 am

12 pm

1 pm

4

3 km

4 km

6 km

9 km

4

220 km

224 km

230 km

234 km

4

14 km

15 km

16 km

17 km

4

6 hours 24 mins

6 hours 21 mins

6 hours 18 mins

6 hours 15 mins

4

60 km/hr

100 km/hr

110 km/hr

120 km/hr

4

# A man covered a certain distance at some speed. Had he moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. The distance (in km) is:

$35$

$36\frac{2}{3}$

$37\frac{1}{2}$

$40$

4

9 km/hour

10 km/hour

11 km/hour

12 km/hour

4

1 hr

2 hr

3 hr

4 hr

4

# A car travelling with $\frac{5}{7}$ of its actual speed covers 42 km in 1 hr 40 min 48 sec. Find the actual speed of the car.

$17\frac{6}{7}$ km/hr

25 km/hr

30 km/hr

35 km/hr

4

300 kmph

360 kmph

600 kmph

720 kmph

4

70 km/hr

75 km/hr

84 km/hr

87.5 km/hr

4

83.5 km/hr

84.5 km/hr

86.5 km/hr

87.5 km/hr

4

50 km

56 km

70 km

80 km