If 5 men dig a hole in 5 hours, how long will it take 2 men to dig half a hole?

Step-by-step explanation:

5 men do 1 unit of work in 1 hr. 1 man does 1/5 unit of work in 1 hr. 2 men do 2/5 units of work in 1 hr. Therefore 2 men will take 5/2 hours to dig 1 hole and take 5/4 hrs to dig half a hole.

2 men will take 5/4 hrs to dig half a hole.

Step-by-step explanation:

5 men do 1 unit of work in 1 hour. 1 man does 1/5 unit of work in 1 hour. 2 men do 2/5 units of work in 1 hour. Thats why 2 men will take 5/2 hours to dig 1 hole and take 5/4 hours to dig half a hole. :)

1. perpendicular

2. parallel

3. perpendicular

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.