# SOLUTION: mark is y years old. in five years time aoife will be twice as old as mark and daniel will be two years younger than aoife is now. write an expression in y for the sum of the 3 age

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 Click here to see ALL problems on Age Word Problems Question 645536: mark is y years old. in five years time aoife will be twice as old as mark and daniel will be two years younger than aoife is now. write an expression in y for the sum of the 3 ages now. show workings please :)Answer by ankor@dixie-net.com(16525)   (Show Source): You can put this solution on YOUR website!mark is y years old. In five years time Aoife will be twice as old as Mark A + 5 = 2(y+5) A + 5 = 2y + 10 A = 2y + 10 - 5 A = 2y + 5 : and Daniel will be two years younger than Aoife is now. d + 5 = A - 2 d = A - 2 - 5 d = A - 7 Replace A with (2y+5) d = (2y+5) - 7 d = 2y - 2 : write an expression in y for the sum of the 3 ages now. Sum = y + A + d replace A and d with expressions derived above: S = y + (2y+5) + (2y-2) S = y + 4y + 3 S = 5y + 3 is the sum of the three ages