in a two digit number the digit in units place is twice the digit in tens place if 27 is added to it digit are reversed find the number
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Answer:
given number is 36
Step-by-step explanation:
let the number be = 10x + y
ATQ
y = 2x ------(1)
10x + y + 27 = 10y + x
10y + x - 10x - y = 27
9y - 9x = 27
divide by 9
y - x = 3
put y = 2x
2x - x = 3
x = 3
put x in eq 1
y = 2x
y = 2 × 3
y = 6
the given number is = 10x + y
= 10× 3 + 6 = 30 + 6 = 36
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