Question

Question 14

In the given question, out of four options, only one is correct. Write the correct answer.

If A3 + 8B = 150, then the value of A + B is
(a) 13
(b) 12
(c) 17
(d) 15

Answer 1

We have, A3 + 8B = 150
Here, 3 + B = 0, so 3 + B is a two-digit number whose unit's digit is zero.
$\therefore$ 3 + B = 10 $\Rightarrow$ B = 7
0 as unit place and 1 as carry
Now, considering ten's column, A + 8 + 1 = 15
$\Rightarrow$ A + 9 = 15
$\Rightarrow$ A = 6
Hence, A + B = 6 + 7 = 13