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At present, a man is four times as old as his son. Six years ago, he was thirteen times as old ashis son. How old was the man when his son was born?Tim is now 12 years old. After how many years will his age be greater than twice his present age?A is now 34 years old, and B is 4 years old. In how many years will A be twice as old as B ?earl runs 75 meters in 30 seconds. how many meters does earl run per secondWhen 8 times a number is increased by 4, the result is 60. Find the number.