Question

In a two-digit number the digit in the units place is four times the digit in tens place and sum of the digits is equal to $10$. What is the number?

• A. $14$
• B. $41$
• C. Data inadequate
• D. None of these

Answer 1

The correct option is D None of these

Let's take number as $10x+y$
As per question,
$y=4x$, and
$x+y=10$
So, $x+4x=10$
$5x=10$
$x=2$
$y=2\times 4=8$
So, number is $10x+y=10\times 2+8=28$