Question

34. A telegraph post 11/2m long 1 point
was set 6/5m into the ground.
What was the length of the
post above the ground ? *.
022/5
O 43/10
O 21/5
O 47/10​

Answer 1

Given:

Length of telegraph post=11/2 m

Post set into ground=6/5m

To find:

The length of the post above the ground

Solution:

The length of the post above the ground is 43/10.

We can find the length by following the process given below-

We know that the total length of the post is the sum of the length of the post set into the ground and the length of the post above the ground.

Length of the telegraph post=Length of the post set into the ground+length of the post above the ground

We are given that the length of the telegraph post is 11/2 m and the length of the post set into the ground is 6/5m.

Using these values, we get

11/2=6/5+length of the post above the ground

11/2-6/5=length of the post above the ground

Taking the LCM of 2 and 5,

(55-12)/10=length of the post above the ground

43/10=length of the post above the ground

Therefore, the length of the post above the ground is 43/10.