Level 1
Kira had a string which was 23 m long. She cut them into 6 identical smaller pieces. What was the length of each of the small piece of string? Give your answer in the simplest form.
Level 2
A tap took 12 minutes to fill up a pail with a capacity of 4 ℓ. At the same rate, how long would it take for the tap to fill up 25% of a container with a capacity of 30 ℓ? Express your answer in min.
Level 3 Jen had a sum of money. She spent an equal amount of money daily. At the end of the eighth day, she was left with 25 of her money. At the end of the tenth day, she was left with $12. How much money did she have at first?