SOLUTION: If y varies directly as x, and y is 56 when x is 21, find y when x is 74.

SOLUTION: If y varies directly as x, and y is 56 when x is 21, find y when x is 74.

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Question 1171038: If y varies directly as x, and y is 56 when x is 21, find y when x is 74.
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

If varies directly as , then

and if is when is,then

your equation is:

find when is :

-> exact solution

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