Latest Bank Exam Aptitude Question SOLUTION: A motor starts with the speed of 70 Km/hr with its speed increasing every two hours by 10 Kmph.In how many hours it will cover 345 kms ?

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A motor starts with the speed of 70 Km/hr with its speed increasing every two hours by 10 Kmph.In how many hours it will cover 345 kms ?

Asked In Bank Exam Devendra Marghade (12 years ago)

Solved Vignesh Read Solution (6)

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Read Solution (6) :

Vignesh  (12 years ago)

In 4 hours and 30 minutes it will cover 345kms.

In 1st hour, it finishes = 70km (At the speed of 70km/hr)
In 2nd hour, it finishes = 140km (At the speed of 70km/hr)
Now, after 2 hours it increase speed rate from 70km/hr to 80km/hr.

In 3rd hour, it finishes = 220km (speed of 80km/hr)
In 4th hour, it finishes = 300km (speed of 8okm/hr)
Now, after 2 hours it increase speed rate from 80km/hr to 90km/hr.
Per hour = 90km speed means,
Half n hour = 90/2km => 45km speed.

So, in 4hours 30minutes, it cover 345kms.

Is this solution Helpfull? Yes (15) | No (2)  

Devansh Dubey  (10 years ago)

Speed 1 = 70 km/hr
Time 1 = 2hr
Distance 1 =speed × time
Distance1 = 140km


Speed 2= 70+10= 80km/hr
Time 2 = 2 hr
Distance 2= 80×2 = 160km

Distance left = total distance - distance covered
Distance left = 345 - 300
Distance left = 45

Speed 3 = 80+10 =90km/hr
Distance 3 =45km
Time 3 = distance
Speed
Time 3 = 45/90hr
Time 3= 1
2. Hr


Total time = 2+2+1
1. 1. 2. Hr

Total time = 4+4+1
2. hr. = 9_
2. hr (answer)

Is this solution Helpfull? Yes (2) | No (2)  

SATISH VARADA  (11 years ago)

73/16hr=4.5625
initially after 2hrs it covers 140km
remaining is 205km
80t=205
total time is:2+205/80

Is this solution Helpfull? Yes | No (3)  

Devansh Dubey  (10 years ago)

9
2. Answer

Is this solution Helpfull? Yes | No (3)  

Chirag Ranjan Lahiri  (9 years ago)

73/16hr=4.5625
initially after 2hrs it covers 140km
remaining is 205km
80t=205
total time is:2+205/80

Is this solution Helpfull? Yes | No   

Sarau yadav  (7 years ago)

73/16hr=4.5625
initially after 2hrs it covers 140km
remaining is 205km
80t=205
total time is:2+205/80

Is this solution Helpfull? Yes | No   

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