Question

17. Three taps P. O and R are connected to the tank and
can fill the tank in a certain time. P and Q can fill it
in 30 mins and 40 mins respectively, while R can
empty it in 20 mins. If all the three taps are kept
open successively for 1 min each, then how much
time will it take to fill the tank?
A. 341 mins
346 mins
347 mins
B 40
D. 360 mins
70 20
Lo
Space
A
20-740

Answer 1

Answer:

341 is the answer

mark as brainliest