A block of ice is melting at an average of 1/2 it’s weight each hour. After 5 hours the block weighed 1 pound. How much did the block weigh originally?
A. 5 lb
C. 16 lb
B. 10 lb
D. 32 lb

answer: it's d

step-by-step explanation:

the answer to this is a. a^2 + b^2 = c^2

answer: 5 17/33 % (to the tenth)

step-by-step explanation:

he guessed: 34.5 pounds

actual weight is 32.7

there for he is off:

34.5 -32.7 = 1.8

32.7 is the 100%

1.8 represents %? of 32.7

therefore:

32.7   - 100%

1.8     -     x%

x= 1.8*100%/32.7% = 18*100%/327%

x=1800%/327%   = (5 165/327)%

to the tenth:

5 17/33 %