Question

Basava rides a cycle from his house to school he covers 125 meters in the first minute and 135 meters in the second minutes,.if he reach school at 10minutes. How much distance is between his school and house.

Answer 1

Answer:

Distance covered in successive minutes is

125, 135, 145, .......

So its an AP series with

First term a = 135

Common difference d = 135 - 125 = 10

n = 10

So total distance =

$\frac{n}{2} (2a + (n - 1)d) \\ = \frac{10}{2} (2 \times 125 + (10 - 1) \times 10) \\ = 5(250 + 90) \\ = 5 \times 340 \\ = 1700 \: meters$