Math, asked by Lolll, 1 year ago

the sum of a digit of a 2 digit no. is 8.If the digits are reversed , the new no. is increased by 18. Find the new no. please answer fast and correctly.. tomorrow is my exam...

Answers

Answered by himanshii

done..........................

Attachments:

Lolll: thanks.. but it is from linear equation in one variable

Lolll: I am really sorry i have not mentioned it in the Q

Answered by abhishekdasonl

let the tens digit be x and units digit be y

also, 10x + y = Original Number

x + y = 8-----i

if the digits are reversed
then, tens digit = y
units digit = x

then, 10y + x + 18 = 10x + y
=> 9x-9y= 18
=>x-y = 2-----ii

adding i and ii

2x = 10
=> x = 5
y = 3
therefore, the number is 35

abhishekdasonl: Original number is 53 and the new number is 53

abhishekdasonl: new number is 35

Lolll: thanks a lot.. but it is linear equation in one variable

abhishekdasonl: hmm! cant solve with ine variable

Lolll: yes.. thats the problem

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