Answer:
Simon needs 125 ml milk.
Explanation:
The given ingredients needed to make 8 pancakes.
Milk = 250 ml
Egg = 1
Flour = 140 g
Butter = 5 g
Simon makes 4 pancakes.
∵ In 8 pancakes milk needed = 250 ml
∴ in 1 pancake milk needed =

∴ in 4 pancake milk needed =
× 4
= 31.25 × 4
= 125 ml.
Simon needs 125 ml milk.