"A sink contains exactly 12 litres of water. If water is drained from the sink until it holds
Channel: Doubtnut
Date: 05/04/2020

"A sink
 contains exactly 12 litres of water. If water is drained from the sink until
 it holds exactly 6 litres of water less than the quantity drained away, then
 how many litres of water were drained away?
(a) 2 (b) 3 (c) 6 (d) 9"