Question

5 b
6 a
please tell
......

Answer 1

hope this helps u.....

Answer 2

Answer:

Step-by-step explanation:

Let 10s digit be x

Ones digit be y

Number = 10x + y

Case 1

x + y = 9....................(1)

Case 2

New no. = 10y + x

10x + y - (10y + x) = 45

10x + y - 10y - x = 45

9x - 9y = 45

9 ( x -y) = 45

x - y = 45 / 9

x - y = 5...............(2)

From eq 1 and 2

x + y = 9

x - y = 5

**********

2x = 14

x = 7

In eq 1

x + y = 9

y = 9 - x = 9 - 7 = 2

y = 2

●●●●●●●

Number = 10x + y.

= 10 × 7 + 2

= 72.

I hope this helps...

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