The difference between these two cans is that

The correct answer is: 8l200ml

GIVEN-
Quantity 1- 30l and 500 ml = (30 * 1,000)ml + 500 ml = 30,000 ml + 500 ml = 30,500 ml ...... (1l = 1,000 ml) ......... (Equation i)
Quantity 2- 22l and 300 ml = (22 * 1,000)ml + 300 ml = 22,000 ml + 300 ml = 22,300 ml ...... (1l = 1,000 ml) ......... (Equation ii)
TO FIND-
Difference between the 2 quantities.
SOLUTION-
Difference between the 2 quantities = Quantity 1 - Quantity 2
∴ Difference between the 2 quantities = 30,500 ml - 22,300 ml ........................ (From Equations i & ii)
∴ Difference between the 2 quantities = 8,200 ml
∴ Difference between the 2 quantities = 8,000 ml + 200 ml
∴ Difference between the 2 quantities = 8 l + 200 ml ......................................... (1 l = 1,000 ml)
Final Answer:-
Option 'd' i.e. '8l200ml' is the correct answer to the given question.