Question

दो अंको से बनी एक संख्या के दहाई का अंक, इकाई के अंक से 5 कम है यदि अंको के स्थान बदल दिए जाएं तो नई संख्या पहली संख्या के दो गुने से 7 अधिक हो जाएगी वह संख्या बताइये

Answer 1

will u pls elaborate this q and in english

Answer 2

Number = 38

Step-by-step explanation:

Let the units place digit be x

We are given that The tens digit of a number made up of two digits is 5 less than the digit of the unit.

So, Ten's place digit = x-5

Number = 10(x-5)+x

We are given that If the digits are replaced, the new number will be 7 more than the two times the first number.

Interchanged number = 10x+(x-5)

ATQ

$10x+(x-5) - 2( 10(x-5)+x) =7$

$10x+x-5 - 2(10x-50+x) =7$

$11x-5 - 20x+100-2x =7$

$95-11x =7$

$95-7 =11x$

$88=11x$

x=8

Ten's place digit = x-5=8-5=3

Number = 38

# Learn more :

Number system

1)https://brainly.in/question/11364337,Answered by Siddharta7