Question

Five litres of water wee poured from tank A to tank B and 10 litres were then poured from tank A to Tank C. If tank A originally had 10 more litres of water than tank C, how many more litres of water does tank C now have more than tank A?

Answer 1

Let the original no. of litres of water in tank A be 'x'.
Then C originally had = x-10
Now, C has = 'x'.
But A lost '10' to C and '5' to B as well, so A now has =x-10-5 = x-15

helps?

Answer 2

So, now A has 'x-15' and C has 'x'.

That means C has '15' more than A. right?

Answer 3

A = 10+C
A' = A-15 --> A = 15+A'
C' = C+10 --> C = C'-10
by substitution
15+A' = 10+(C'-10)
15+A' = C'

tank C now has 15 more than A