In a two digit number digit in unit place is twice the digit in tens place. If 27 is added to
it, digits are reversed. Find the number
Answers
Answer:
36
Step-by-step explanation:
First, we want to look at all the two digit numbers where the number in the units spot is two times the number in the tens spot. This means that the number could be 12, 24, 36, or 48 since the number in the units spot is two times the number in the tens spot ( 1*2=2 giving us 12, 2*2=4 giving us 24.....). Next, we need to see what number we can add 27 to to reverse the digits. When we add 27 to 12, we get 39. This means that 12 can not be the number because if the numbers were to reverse, 12 should have become 21. Repeat this for all the numbers and you find out that 36 is the mystery number. When you add 27 to 36, you get 63. We know that the reversed digits of 36 is 63, so, we know that the mystery answer is 36.
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Hope this helped
- Brooklyn