Question

7. In a 2-digit number, digit in units place is twice the digit in tens place. If 27 is added to it, digits are reverse find the number


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Answer 1

Answer:

-63

Step by Step Solution:

Let tens place be X

Units place 2X

Number =

2X + 10(X)

2X + 10X

12X

If number is reversed

X + 10(2X)

X + 20X

21X

12X + 27 = 21X

12X - 21X = 27

-9X = 27

X = -3

Units place = -6

The number is -63

Check:

-63 + 27 = -36

The number is reversed