The Tens digit of a two digit number is 4 times of its unit digit and the sum of the digits be 10. Then the first number is  Choose the correct answer:	A) 67	B) 73	C) 53	D) 82	E) 89

Rationale: let the number be 10 x + y according to the question x = 4 y x + y = 10 4 y + y = 10 or y = 2 and x = 8 so required number is = 10 * 8 + 2 = 82 answer : d
Answer: D