Question

A number consists of two digits whose sumn is 9. 1 27 is subtracted from the numbers
digits are reversed. Find the number.
A number is divided into two parts such that one part is 10 more than the other. If the two
Riva​

Answer 1

Correct question :

A number consists of two digits whose sumn is 9. when 27 is subtracted from the number digits are reversed. Find the number.

Answer:

Original number = 63

Explanation:

given that,

A number consists of two digits whose sumn is 9

let the ones digit of the number be x

and ten's digit be y

so,

the number = 10y + x

now,

given the sum of its digits = 9

so,

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

now,

also,

given that,

when 27 is subtracted from the number digits are reversed.

here,

reversed digit number = 10x + y

according to the question,

10y + x - 27 = 10x + y

10y - y + x - 10x = 27

9y - 9x = 27

9(y - x) = 27

y - x = 27/9

y - x = 3 ...(2)

now,

we have,

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

y - x = 3. ...(2)

adding the both equations

y + x + y - x = 9 + 3

2y = 12

y = 12/2

y = 6

now,

from eqn (1)

y + x = 9

putting the value of y

6 + x = 9

x = 9 - 6

x = 3

y = 6

so,

number = 10y + x

= 10(6) + 3

= 60 + 3

= 63

so,

Original number = 63

Answer 2

Correct question

A number consists of two digits whose sumn is 9. 27 is subtracted from the numbers digits are reversed. Find the number.

Answer:

Original number = 63

Step by step explanations :

Refer to the attachment

sorry for the bad handwriting