Question

the difference between a two digit number is 9 if the sum of the two digit is 15 then what is the original number​

Answer 1

By the given condition,

10x+y-(10y+x) =9

So,10x+y-10y-x=9

9x-9y=9

x-y=1 _____(1)

Now ,we have the sum of digits,

x+y=15_____(2)

ADDING EQN.(1) AND (2),

2x=16

x=8

So, 8-y=1

y=7

Now the product of two digits is,

x×y=8×7

x×y=56

Answer 2

Answer:

I think that upper answer is right

Explanation:

WTF

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