Question

The ones of two digit is x and tens is y, then the double of that digit is .......... .


10x + 2y

20x + 2y

2x + 20y

2x + 10y


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Answer 1

Answer:

Suppose our number is 53.It has 3 at units digit and 5 as tens digit

So 53 can be written as 10×5+3

Similarlly any 2 digit number say 'yx' with x at units digit and y as tens digit which can be written as 10x+y

Another approach is say our number is yx then by dividing it with 10 we get remainder x and quotient as y

So we know that dividend=divisor×quotient+remainder

So xy=10×y+x

Step-by-step explanation:

HAPPY LEARNING ☺️

Answer 2

Answer:

20y+2x..............................