Question

Ramya can finish a work alone in 12 hours and Tanya can finish the same work alone in 15 hours. If they work together, in how much time can they finish the work?

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Answer 1

Answer:

both will take 6 hours and 40 minutes to complete the work

Step-by-step explanation:

ramyas 1 hour work = 1/12

Tanya's 1 hour work= 1/15

so both 1 work together= 1/12+1/5=9/60

let both take it to do it in x hour's

so,

(9/60)t = 1

x = 60/9h = 6 hour + (6×60)/9 minutes

x = 6 hours and 40 minutes.

thanks