If partridge has 1/2 gallon of water how many buckets would he need to fill a tub that hold 10 gallons of water

option a is correct = 78 = (0.55) w            

step-by-step explanation:

to find : which equation could you use to solve -seventy-eight is 55% of what number.

let the number = x

so, 55% of x =      

and according to question 78=(0.55)x  

from the given situation option a matches with it where x=w

therefore, option a is correct = 78 = (0.55) w