A number consists of two digits. the digits at the units place is 3 times the digit at the tens place. If 36 is added to the number, the dig

Question

A number consists of two digits. the digits at the units place is 3 times the digit at the tens place. If 36 is added to the number, the digits are reversed. Find the number?

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Ella 1 month 2021-09-13T21:59:37+00:00 2 Answers 0

Answers ( )

    0
    2021-09-13T22:01:16+00:00

    Answer:

    x = that number

    x = 10a + 3a =13a

    x_reverse = 3ax10+a =31a

    Have:

    13a+36 =31a

    => a =2

    => x =26

    0
    2021-09-13T22:01:27+00:00

    Answer:

    The number is 26.

    Step-by-step explanation:

    Let the number be xy.

    Then:

    y = 3x   also:

    10x + y + 36 = 10y + x

    9x – 9y =  = -36

    x – y = -4

    Substituting y = 3x in the above equation:

    x – 3x = -4

    -2x = -4

    x = 2.

    and y = 3*2 = 6.

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45:7+7-4:2-5:5*4+35:2 =? ( )