Question

Two beauticians, Lydia and Jackie, are working on your hair. Lydia can complete the work in 2 hours, while Jackie can complete the work in 1 hour. How many hours do the beauticians take if they work together?

The choices are:
- 1/2
- 3/2
- 2/3
- 4/3

Answer 1

the answer is 2/3 i just took the test

Explanation:

Answer 2

Both working at the same time:

if
1 job = 2 hours
1 job = 1 hour
------------------- (adding)
2 jobs = 3 hours
or
1 job = 3/2 hours

the answer is 3/2 hours