Is the process of introducing a non blood fluid into the blood

i think it would be 80 km/h because 30 + 50 = 80 (sorry if this not the right answer i'm trying my best)

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..