Solve these Riddles/Equations/Problems

755. When Miguel was 6 years old, his little sister, Leila, was half is age. If Miguel is 40 years old today, how old is Leila?

705. You are given 3 positive numbers. You can add these numbers and multiply them together. The result you get will be the same. Which are the numbers?

791. Caleb is 54 years old, and his father Franklin is 80. How many years ago was Franklin three times the age of his son Caleb?

791. Eggs are $0.12 a dozen. How many eggs can you get for a dollar?

Wave
What is your answer to the riddle?

743. What is the smallest whole number that is equal to 7 times the sum of its digits?

Wave
What is your answer to the riddle?

721. A grandmother left half of her money to her granddaughter and half of that to her grandson. She left a sixth to her brother and the rest, $1000 to dogs' home. How much money in total did the grandmother leave?

Wave
What is your answer to the riddle?

710. A duck was given $9. A spider was given $36. A bee was given $27. Based on this information, how much money would be given to a cat?