



 
Hi Lamarr, If the daughter is 4 years old now and the father is 4 times as old as the daughter then the father would be 4 × 4 = 16 years old, so your answer can't be correct. I would start by saying "Let the fathers age be f and the daughters age be d." The first clue says "A father is four times as old as his daughter is now." This translates to the equation
The second clue says "In 20 years he will be only twice as old as his daughter." In 20 years the father will be f + 20 years old and the daughter will be d + 20 years old. Translate the second clue into an equation. Substitute the first equation, f = 4 × d, into the second equation and solve for d. Check your solution! does it satisfy both clues? Penny  


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