Question

A man decided to go for morning walk every day. he decided to walk for 10 minute on the minute on the first day and increase the time by each day on which day wii he able to walk fir 135 minute​

Answer 1

Answer:

13 1/2

...............................

Answer 2

Concept:

An arithmetic progression is a continuous series with a common difference.

Given:

The time of walk increases by one minute each day.

To find:

The day by which he will be able to walk 135 minutes

Solution:

If the person starts with walking 10 minutes on the first day, the first term is 10.

On each day, the time increases by one minute.

Therefore, the common difference is 1.

The last term given is 135.

Let the number of days required for 135 minutes be n.

An= a + (n-1)d

Therefore,

135= 10 + (n-1)*1

125+1 = n

n= 126.

Therefore, he'll be able to walk for 135 minutes on 126th day.