I have two identical twins. Together, our ages sum up to 120. If each twin is twice my age, how old am I?
24
Let your age be x. The twins' ages are 2x and 2x. Therefore, x + 2x + 2x = 120, which simplifies to 5x = 120, making x = 24.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
More math riddles
I am a famous mathematical sequence where each member is the sum of the two before it: 0, 1, 1, 2, 3, 5, 8... What is the 10th number in this sequence if 0 is counted as the 1st?
Half of the 28 autumn leaves on the table are taken away. How many autumn leaves are left on the table?
I am a two-digit number. My tens digit is twice my units digit, and the sum of my digits is six. What number am I?
A patch of lily pads doubles in surface area every day. If it completely covers the surface of a pond on Day 48, on which day did it cover exactly 25% of the pond?
Mia has 6 turkeys. Max has twice as many. How many turkeys do they have together?
A lily pad doubles in size every day. If it takes 30 days to cover the entire pond, how many days did it take to cover exactly half the pond?