There are two firms who will compete on quantity. The market demand is D(P)=190-3P. Both firms initially have a marginal cost of 10. However, if the first firm makes an investment of 100, it can lower its marginal cost to 5. Will it?

There are two firms who will compete on quantity. The market demand is D(P)=190-3P. Both firms initially have a marginal cost of 10. However, if the first firm makes an investment of 100, it can lower its marginal cost to 5. Will it?