Question
The charges for a graphics designer is partially fixed and partially variable with the number of hours. The charge is Rs.550 for 4.5 hours and Rs.300 for 2 hours. Find the charges of 1 hour?
Answer: Option B
:
B
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B
The total charge = Fixed component +Variable component
Z= F+kx
Where F and x are fixed
550 =F +k(4.5)
300=F + k(2)
Solving simultaneously, F= 100 and k= 100
Charges for 1 hour = 100 +1(100) =200
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