Respuesta :
Answer:
kevin is 6 years old
Step-by-step explanation:
Let Kevin's age now be a
Daniel's age now be b
Kevin is 3 years older than Daniel. -> a-3 = b
Two years ago, Kevin was 4 times as old as Daniel -> a-2 = 4(b-2) = 4b -8
-> a-3 -(a-2) = b - (4b-8)
-> - 1 = -3 b +8
-> -9 = -3b
-> b = 3
-> a = 6
Answer:
Present age of Kevin = 6 years
Step-by-step explanation:
Let the present age of Daniel be 'x' years
So, present age of Kevin = (3 + x) years
Two years ago,
Kevin's age was = [(3 + x) - 2] years
& Danial's age was = (x - 2) years
Its given that two years ago, Kevin was 4 times as old as Daniel
So,
=> (3 + x) - 2 = 4(x - 2)
=> 3 + x - 2 = 4x - 8
=> 1 + x = 4x - 8
=> 3x = 9
=> x = 3
Therefore, present age of Daniel = 3 years
& Present age of Kevin = 3 + 3 = 6 years