Http://lbcsd.innersync.com/sites/jhayes/documents/U1M3Gr6pg.49-502015JHayes.pdf
Answer:
2 hours 33 mins
Step-by-step explanation:
Arrives = 8.12 pm
Leaves = 10.45 pm
8.12 pm to 10.12 pm = 2 hours
10.12 pm tp 10.45 pm = 33 minutes
Total
= 2 hours + 33 mins
= 2 hours 33 mins
The first thing we must keep in mind is the following unit conversion:

We have then that for 35 gigabytes:
Part A:
For this case we make the following rule of three:
2000 bytes --------------> 1 page
35*10^9 bytes ----------> x
From here, we clear x:
Part B:
Then, the number of 500-page books is:
the answer is 10. if you take the lcm of 5 and 2 you should get it.
I'll give you a head start so the first thing you wanna do is make a number line of positive and negative numbers I know you can do it