The effect is that there will be an increase in the operating income by $183000.
Based on the information given, the following can be deduced:
Increase in contribution = 4900 × (65 - 25) = 196000
Less: Increase in advertising cost = 13000
Increase in operating income = 183000
In this case, the effect is that there will be an increase in the operating income by $183000.
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