Quantitative Aptitude Ques 188

Question: In a number of two digits, units place digit is 2 more than the tens place digit. Four times the sum of digits is 3 less than the number, then the number is

Options:

A) 35

B) 57

C) 46

D) 68

Show Answer

Answer:

Correct Answer: A

Solution:

  • Let unit’s place digit be x and ten’s place digit be y.

$ \therefore $ Number $ =10y+x $ According to the question, $ x-y=2 $ … (i) and $ 4(x+y)=10y+x-3 $

$ \Rightarrow $ $ 3x-6y=-3 $

$ \Rightarrow $ $ x-2y=-1 $ … (ii) On solving Eqs. (i) and (ii), we get x = 5 and y = 3 Hence, number $ =10y+x $ $ =10\times 3+5=35 $

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