15% of an apple orchard are red delicious apple trees. The orchard has 36 red delicious apple trees. How many trees are in the orchard?

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

Need this asap if anyone can i would be very grateful. if you could show workings that would really