Question
The speed of a car increase by 2 kms after every one hour .If the distance travelled in the first one hour was 35 kms. What was the total distance travelled in 12 hours.
Answer: Option C
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Total distance travelled in 12 hours = (35 + 37 + 39 +............... upto 12 terms).
This is an A.P. with first term, a = 35, number of term, n = 12 , common difference , d = 2
`:.` Required distance = `12/2` [2 x 35 + (12 - 1) x 2] = 6(70 + 22) = 552 km.
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