Question

ek nal jiska diameter D h .ek tank ko 40min m bharta h .to ek nal jiska diameter 2D h .vo tank ko kitne der m bharega

Answer 1

Hey,

Your answer,

If the tap with Diameter D fills the tank in 40 mins then the second with diameter 2D will half the time of D. The second tap will fill the tank in 20 minutes.

Hope it helps!

Answer 2

diameter=d
time =40min
diameter=2d
time=40×2=80 min