find the level of output while average cost is equal to marginal cost

[@Ebrima_Camara]

Can you check the answer properly? 0.15-0.05= 0.1 not 0.2 I got Q=50

[@ambar1289]

Sir plz solve this... A firm can produce quantity x of a product at cost : 1/3 x³ - 6x² +160x +15 where P is the price of product. (a) Show that the marginal cost is positive at all levels of production. (b) Find the profit maximising level of output. Plzz sir solve this 🤧