Problems

Age
Difficulty
Found: 24

John’s father is 28 years older than John and next year he will be exactly three times the age of John. How old is John’s father?

You have an hourglass that measures 8 minutes and an hourglass that measures 12 minutes. How can you measure exactly 44 minutes with them?

Joe has two kinds of weights: 15 grams and 50 grams. He has an infinite supply of each type. Can you help him find a combination that is exactly 310 grams?