Annie bought a mobile and sold it to Ben at a profit of 50%. After few

Annie bought a mobile and sold it to Ben at a profit of 50%. After few days, Ben sold it back to Annie at 40% loss, and then Annie sold it to Charlie at 30% profit. Find the overall profit percentage of Annie? A. 40.53% B. 77% C. 87% D. 90% E. (…)