Correct option is D
Given:
Time taken by Navya to paint the house = 20 days
Time taken by Bahvya to paint the house = 30 days
Formula Used:
Let total work be 1.
Then work done 1 day =
Solution:
Work done by Navya in one day =
Work done by Bhavya in one day =
Work done by both Navya and Bahvya in two days working alternatively
=
Total time taken to complete the work =
Days required = = 24 days