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? Answers: A) 252 kms B) 152 kms C) 552 kms D) 752 kms E) 152 kms
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.   Answer: 552 kms
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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?