it only takes vera 2 hours to sew 1 dress, but it takes ivy 4 hours. Working together, how many hours would it take the two of them to sew 12 dresses?

Answer 1

First, we need to find out how many dresses the two of them can sew per hour together.

Vera can sew 1 dress in 2 hours, so she can sew 1/2 = 0.5 dresses per hour.
Ivy can sew 1 dress in 4 hours, so she can sew 1/4 = 0.25 dresses per hour.

Together, they can sew 0.5 + 0.25 = 0.75 dresses per hour.

To sew 12 dresses, they would need to work for 12 / 0.75 = 16 hours.

So, it would take the two of them 16 hours to sew 12 dresses together.