Explanation : his dads age : 41 since his dads age is six more than, you would subtract 6 from 41 to get 35. and since 35 is 5 times bobby’s age you would divide 35 by 5 to get 7 So bobby is 7.
bobby’s sister : bobby’s age : 7 bobby’s little sisters age is one less than half of his age you subtract 1 from 7 and you would get 6 Now that it’s one less you have to find half so divide 6 by 2 and you’ll get 3 So bobby’s sister is 3.