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x= Mr .Lee's daughter's age last year y= Mr .Lee&...26years older than her) Sub eq1 into eq2, 3x=x+26 2x=26 x=13 Mr .Lee's age now =3*13+1 ( 3 times as old as his daughter...

Mr .Choi有一個蛋糕, 他跟Miss.Tang分享。 Mr .Choi取了蛋糕的3份,剩下的給了Miss.Tang。如果 Mr .Choi把他的蛋糕的100克給予Miss.Tang , 那麼 Mr ...

Mr . chan 每小時走60公里坐車 走了50公里後,减速至40公里每小時 再走40公里 佢...

1. Mr . Chung 's age is 8 times his daughter's age... later , the sum of their age will be 87. how old is Mr . Chung now? Let x be the age of Mr . Chung now...

或者可以用一個更易明的方法,但麻煩些~ Let x be the Mr .Chan's salary. x(1+10%)=11000 x+10%x=11000 110x/100=11000 110x=1100000...

Mr .Tang deposited $10000 in a bank at thebeginning of 2012 and $9000 at the...

1. Mr C wishes to withdraw savings from his RRSP...payment towards income taxes owing on the withdrawal. How much should Mr . C withdraw so as to have $1000 clear? Amount clear = withdrawal amount x...

1. Mr Ko earns $12000 per month.The rateable value of his flat... annual income. If the percentage of rateable value is 5%,how much should Mr Ko pay for the quarterly rates of his flat? The rateable...