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Math Help - number problem

  1. #1
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    number problem

    the tens digits of a two-digit number in two more than the one digit . The number is thirty more than four times the sum of the digits. what is the number?
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by ik_km View Post
    the tens digits of a two-digit number in two more than the one digit . The number is thirty more than four times the sum of the digits. what is the number?
    Let a be the tens digit
    Let b be the ones digit

    since the tens digit is two more than the ones digit, we have:

    a = b + 2 ...................(1)

    since the number is thirty more than four times the sum of the digits, we have:

    10a + b = 30 + 4(a + b) ...................(2)

    thus you need to solve the system of simultaneous equations:

    a = b + 2 ...............................(1)
    10a + b = 30 + 4(a + b) ...........(2)
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  3. #3
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    thnx

    thnx jhevon
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