b varies directly as a. if b is 78 when a is 13, what is b when a is 23?

Discussion in 'Calculator Requests' started by math_celebrity, May 8, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    b varies directly as a. if b is 78 when a is 13, what is b when a is 23?

    Using our direct variation calculator, we get:
    b = 138
     

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