Question

$1528+A\underset{–}{}15B0\underset{–}{}$
A =___ and B =___

• A. A = 2 ; B = 3
• B. A = 1 ; B = 2
• C. A = 3 ; B = 2
• D. A = 10 ; B = 2

Answer 1

The correct option is A A = 2 ; B = 3

We know that A is a single digit number which when added to 8 gives a number with 0 in its ones place.
For ones digit, 8+ 2 = 10
$\Rightarrow$ A = 2 and 1 is carried over to the tens place column.

For tens digit, 1(carried over) + 2 = 3 = B

The hundreds and thousands digits remain unchanged.

Hence, A = 2 and B = 3.

$1528+2\underset{–}{}1530\underset{–}{}$