Question

Ravu can do a piece of work in 15 hour while raman can do it in 12 hours. How ling will both take to do it , working togather

Answer 1

heyy here is ur ans...

Ravu can do a work in 15 hour
1 hour = 1/15

Raman can do a work in 12 hrs
1 hr = 1/12

LCM = lcm of 12 & 15 = 60

work done by ravu and raman together

= 1/12 × 1/15 = 5 + 4 / 60

= 9/60 = 3/20...is the work done by them together

hope it helps u....if it did plzz mark me brainliest.....thanks.....!!!