HELPpPppPp ASAP I rlly need help I’m timed frrr I will give u a thing just help and show your work

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?