Question

Three litres of water is used to fill four identical bottles.one bottle is used to fill five identical cups .how much water is in one cup?how many millilitres in this?

Answer 1

water to fill four identical bottles  = 3 x 1000 = 3000ml

water in one bottle = five identical cups  = 3000/4 = 750ml

water in one cup = 750/5 = 150ml

Answer 2

3 litre fill 4 bottles i.e.,

1 bottle contains 3/4 =0.75L

1bottle fill 5 cups i.e.,

1 cup contains 0.75/5 or 0.75L or 150 ml