Question

39. In the two digit number x, both the sum and difference of its digits is 4. What is the value
d)15
of x?
a) 13
c) 40
b)31
d)48
10​

Answer 1

Answer:

c) 40

Step-by-step explanation:

Let the digits at one's and ten's place be b and a respectively,

ATQ,

x+y=4      -(1)

and,

x-y=4       -(2)

(1)+(2), we get,

x+x+y-y=4+4

=> 2x=8

=> x=4

Substituting the value of x in (1), we get,

4+y=4

=> y=4-4

=> y=0

So, The value of x is 40 so c) 40

Hope it helps :)

Please mark brainliest if it does