Queras The digit at tens place of a two digits numberis two times the

1.	Queras The digit at tens place of a two digits numberis two times the digit at onces place. If digits arerevered, the number becomes 18 less than the originalnumber. What is the original number?Ang 9-)
Answer» Step-by-step explanation: let the digit at 10's place be X and digit at UNIT's place be y. ACCORDING to 1ST and 2nd condition, x = 2y....... (I) by interchanging 10y + x = 10x +y - 18..... (II) substituting value of x in equation (II) 10y + 2y = 10(2y) + y - 18 12y = 21y - 18 12y - 21y = - 18 -9y = - 18 y = 2 by putting value of y in equation (I) x = 2(2) x = 4 original number = 10x + y = 10(4) + 2 = 40 + 2 = 42

Queras The digit at tens place of a two digits numberis two times the digit at onces place. If digits arerevered, the number becomes 18 less than the originalnumber. What is the original number?Ang 9-)

Answer»

Step-by-step explanation:

let the digit at 10's place be X and digit at UNIT's place be y.

ACCORDING to 1ST and 2nd condition,

x = 2y....... (I)

by interchanging

10y + x = 10x +y - 18..... (II)

substituting value of x in equation (II)

10y + 2y = 10(2y) + y - 18

12y = 21y - 18

12y - 21y = - 18

-9y = - 18

y = 2

by putting value of y in equation (I)

x = 2(2)

x = 4

original number = 10x + y

= 10(4) + 2

= 40 + 2

= 42

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Queras The digit at tens place of a two digits numberis two times the digit at onces place. If digits arerevered, the number becomes 18 less than the originalnumber. What is the original number?Ang 9-)​

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Queras The digit at tens place of a two digits numberis two times the digit at onces place. If digits arerevered, the number becomes 18 less than the originalnumber. What is the original number?Ang 9-)