Before the sale, the store had 100 pairs of flip flops in stock. After selling some, they notice that 1/4 of the flip flops they have left are blue. If the store has 40 pairs of blue flip flops, how many pair of flip flops (any color) have they sold?

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft