Question

karima can complete a task in 6 hours , whereas
Sabina takes 9 hours to complete the same task
if they both work together on the same task
how long will it take to complete the task​

Answer 1

Answer:

Karima takes 6 hrs to complete task.

So , in 1 hr karima can complete 1/6 part of work.

Sabina takes 9 hrs to complete task.

So , in 1 hr sabina can complete 1/9 part of work.

Now ,

In 1 hr task done by both = 1/6 + 1/9

= 3 + 2 / 18

= 5/18

Therefore ,

Time taken to complete whole task = 18/5 hours

Answer 2

Step-by-step explanation:

take the explanation in the above picture