Question

The volume of water remaining in a tank after 3/10 of its original volume (x) is drained out

Answer 1

(7/10)x

Explanation:

Answer 2

(7/10)x

Explanation:

The original volume less the amount drained out is the amount remaining:

remaining = original - amount drained

remaining = x - (3/10)x = x(1 - 3/10)

remaining = (7/10)x