Answer:
Erosion cost from the new bike is equal to the profit lost from existing bike
= 9,000 x (120 - 35)
= $765,000
Benefit from new bike = 17,000 x (375 - 250)
= $2,125,000
Net Benefit = $2,125,000 - $765,000
= $1,360,000
Since there is net benefit from new bike, Fat Tire should start producing the off-road bike