The speed of a car increases by 2 kms after every one hour If the distance travelling in the first ...........

Quantitative Aptitude ( CCS) Time & distance

The speed of a car increases by 2 kms after every one hour. If the distance travelling in the first one hour was 35 kms. what was the total distance travelled in 12 hours?

456 km

552 km

144 km

768 km

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Explanation:

Explanation:
Total distance travelled in 12 hours =(35+37+39+.....upto 12 terms)
This is an A.P with first term, a=35, number of terms,
n= 12,d=2.
Required distance = 12/2[2 x 35+{12-1) x 2]
=6(70+23)
= 552 kms.