I'm greater then 15 and less then 40. if you double me i become a number that ends in 0. and a 1/5 of me is equal to five. who am I?
25
This might help you see the process in reaching the answer.
The last clue is the best. Let x = the number.
1/5x = 5
Multiply both sides by 5.
x = 25
Does that fit the other data?
To find the answer to this riddle, we need to follow the given clues step by step.
1. "I'm greater than 15 and less than 40":
So, the number has to be between 16 and 39.
2. "If you double me, I become a number that ends in 0":
This means the number, when multiplied by 2, should end in 0. Since it ends in 0, the original number itself must end in 5. So, the possible numbers that satisfy this condition are 25 and 35.
3. "A 1/5 of me is equal to five":
Dividing the number by 5 should give us 5. Only one of the potential answers, 25, satisfies this condition. 25 divided by 5 indeed equals 5. Therefore, the answer to the riddle is 25.
So, the answer is 25.