TCS Company Numerical Ability Age Problem

Two years ago ,a man's age was 3 times the sqr of his son's age.In 3 yrs ,his age will be 4 times his son's age.find the present age.

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TCS Other Question

if 11 is subtracted from one fourth of a no,the diff is equal to one more than one sixth of that no.find the no. If one bulb is taken out at random from a box of 600 electric bulb containing 12 defective bulbs ,then the probability of getting a non defective bulb is?
a. 0.78
b. 0.65
c. 0.98
d. 0.85