The speed of a car increases by 2 kms after every one hour. If the distance travelling in the first one hour was 30 kms. what was the total distance traveled in 12 hours?	Options:
A) 252 kms  B) 152 kms  C) 492 kms  D) 752 kms  E) 152 kms
Explanation:   Total distance travelled in 12 hours =(30+32+34+.....upto 12 terms)   This is an A.P with first term, a=30, number of terms,   n= 12,d=2.   Required distance = 12/2[2 x 30+{12-1) x 2]   = 6(82)   = 492 kms.   Answer: 492 kms
<result>C</result>
The speed of a car increases by 2 kms after every one hour. If the distance travelling in the first one hour was 30 kms. what was the total distance traveled in 12 hours?