Question

Q1.
Karim 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:

18/5 hours

Step-by-step explanation:

Karim can complete a task in 6 hours

work done in 1 hour = 1/6

sabina can complete a task in 9 hours

work done in 1 hour = 1/9

work done by both in 1 hour = 1/6 + 1/9

=(3+2)/18

=5/18

Time taken by both to complete the task = 18/5 hours

=

$3 \times \frac{3}{5} hours$