Read the following sentence, does it contain a mistake? which was a relief to everyone involved in the tragedy

In concrete mixers what seems to be the speakers feeling about the concrete mixers

Kyle and his brother have a marble set of the marbles 12 are blue this represent 50 over a hundred of all the marbles what decimal is equivalent to 50 / 100

How can you sit there calmly eating muffins when we are in this horrible trouble i cant make out you seen to me to be perfectly heartless who said this quote