Logical Puzzles

7. Edward spent $21 on drinks for a party. If the bottle of vodka he purchased was twice the price of the case of beer, and the lemonade was half the price of the beer, how much did Edward spend on the beer?
8. Simon, Steve and Stewart are all apple farmers who pool their crop each year to make cider. For this year’s harvest, Steve supplied three times as many apples as Stewart, and Simon supplied twice as many apples as Steve.If the total number of apples supplied is 900 tonnes, how many did each of them contribute?
Steve = 270.
Simon = 540.
Stewart = 90.