Question

The speed of a

car is increased by 2 km every one

hour. If the distance travelled in the

first hour was

35 km, what was the total distance

travelled in 12 hours?​

Answer 1

Answer:

Step-by-step explanation:

This is an arithmetic series.

Sn = (n/2)(2a1 + (n -1)d)

S12 = (12/2)(2(35) + (12 - 1)2)

S12 = 6(70 + 22)

S12 = 6(92)

S12 = 552