after 12 years ' A 'will be 3 times old as he was 4 years ago. find his percentage
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Answer:
his present age is 12
Step-by-step explanation:
from the que we get the equation
x + 12 = 3 (x - 4)
x + 12 = 3x - 12
3x - x = 12 + 12
2x = 24
x = 12
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