Curly and Larry like to have their orange squash made to the same strength. Unfortunately, Moe has put 25 ml of
squash with 175 ml of water in Curly's glass and 15 ml of
squash with 185 ml of water in Larry's glass. How many
millilitres of the mixture in Curly's glass must be put into
Larry's glass so that they end up with drinks of the same
strength?