Find the probability that a student at greendale middle school takes both art and spanish.

a)3/20
b)2/5
c)7/20
d)1/10

Alright, lets get started.

The volume of tank is given as 26.

When the tank is filled with 85 marbles, 20.9 liters of water required to fill the tank.

So the volume of 85 marble =  

So, volume of each marble =  

So, if William wants to use 200 marbles, the volume that will cover :  

So, in 26 liters of tank, marbles will take volume =  

So, water will be required to fill the tank =  

hence 14 liters of water is required to fill the tank.  :  Answer

Hope it will help :)

Step-by-step explanation: