The unit digit is double than tens digit of a two digit number. If you interchange the digit and add the resulting number to the original number, you get 66. what is the original number.
Answers
Answered by
13
Step-by-step explanation:
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Let tens digit be x.
Unit's digit = 2x
Original number = 10x + 2x = 12x
Reversed number = 20x + x = 21x
According to the question
21x + 12x = 66
33x = 66
x = \frac{66}{33}
x = 2
Original number = 12x = 12 * 2 = 24
Therefore, original number is 24.
Answered by
9
Answer:
Step-by-step explanation:
Let tens digit be x.
Unit's digit = 2x
Original number = 10x + 2x = 12x
Reversed number = 20x + x = 21x
According to the question
21x + 12x = 66
33x = 66
x = 2
Original number = 12x = 12 * 2 = 24
Therefore, original number is 24
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