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Alex787 [66]
3 years ago
12

a half of whats johns age was 4 years ago is equal to one third of what will be in 5 years time. how old is john now?

Mathematics
1 answer:
Leona [35]3 years ago
8 0

Let x = John's age now

half of what johns age was 4 years ago: (1/2)(x-4)

is equal to one third of what it will be in 5 years time: (1/3)(x+5)

 

(1/2)(x-4) = (1/3)(x+5)

 

3(x-4) = 2(x+5)

 

3x - 12 = 2x + 10

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