I believe the appropriate volume is 160.
so basically what i was thinking of was they sold them in the spring
Answer:

Step-by-step explanation:
step 1
Find the units rate of the first glacier

using proportion

step 2
Find the units rate of the second glacier

using proportion

step 3
Find the difference

2.16 x 10 to the power of -4
Shesp ends reading 219 hours reading that book