Businesses licensed by the State and City to sell malt liquor (intoxicating beer), non-intoxicating beer, intoxicating liquor, and/or light wine by the package or by the drink, provided no businesses shall sell malt liquor, non-intoxicating beer, intoxicating liquor and/or light wine by the package or by the drink within one hundred (100) feet of any school, church or other building regularly used as a place of religious worship, unless there is obtained the consent in writing of the Board of Directors of the school, or the consent in writing of the majority of the managing board of the church or place of worship. This one-hundred-foot restriction shall not apply when a school, church or place of worship shall be established within one hundred (100) feet of any existing business already licensed to sell malt liquor, non-intoxicating beer, intoxicating liquor and/or light wine by the package or by the drink. Such one-hundred-foot distance shall be measured from the closest point in a straight line between the buildings.