three times the length of Road B.If the btotal length of the three roads is 47.5 km ,findthe length of each roads.
(2)In the the Quiz ,there are 20 questions .5 marks are awarded for a correct answer and 2 marks are deducted for a wrong answer or no response .If Tom scores 51 mark at end of the quiz.How many correct answersdoes he get?
(3a)Amy and her anut ae now 14 and 54 years old respectively.How many
years later will Amy 's aunt be 3 times as old as Amy?
(3b)How many years ago Amy 's age (五分之一)of her aunt 's age?
(4)A sum of 380 dollars is devided between Kelvin and Winnie .Kelvin spends
(四分之三)of the amount received,while Winnie spends (五分之二)of the amount received. If Winnie spends 32dollars less than Kelvin ,how much does each of them receive?