Question

Rita can complete her project in 10 hours. Rita and Rani together can complete the project in 6.5 hours. How long will Rani take to complete the project alone?

Answer 1

Answer:

now rani can do the work in 130/7 hours

Answer 2

Answer:1/6.5 - 1/10

=10/65 - 1/10

=(20 - 13)/130

=7/130

=130/7= 18 with 4/7