Solve these systems of equations.
1 answer:
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Given that,
y varies directly with x and y = 10 when x = 20.
To find,
The value of y when x = 15.
Solution,
Put x = 20 and y = 10
Put k = 1/2 and x = 15 to find the value of y.
So, the value of y is 7.5
