... = ㄥRBO = 90 (given) ㄥPOA = ㄥ ROB (對頂角) Hence △PAO ~ △RBO (... OB = OC = 3 , by given that OF = 2FC we get OF = 2 and FC = 1...
... had stolen y --- number of peaches Monkey A had ... A: y Then Monkey B robbed half the peaches Monkey A had...
Q1: 280g for ￡3.8 so each gram is ￡0.01357 175g for ￡3.5 so each gram is ￡0.02 Therefore the large tub is cheaper (ie 175g for ￡3.5 is more expensive). Q2: 0.72L is 3% so that total before the increase is 100% = 24L...
...play a game with each other. The probabilities of Amy winning, Bob winning and a tie... known that his probabilities of winning the above three races are 1/2, 3...
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