Question

A can do a job in 15 minutes, B takes 20 minutes while C takes 30 minutes to do the same job. All three begin working together. A leaves after 2 minutes, leaving B and C to continue working together. B leaves 4 minutes after that, leaving C to finish the job. How much more time C will take to finish the job? please answer this question ​

Answer 1

Answer:

it's not maths it's brain confusing question

the answer is c takes 30 minutes as written above

hope it helps