Hello,
do you know what 6% equals in decimal?
With such information, all you must do is multiply the decimal value of 6% to 8000, then add that value to 8000 for the markup value.
=0.4*35 - 0.4*15
=14-6
=8
boom
The mean weight of the packages is 2.5, so the total weight of the packages is found by multiplying 2.5 pounds by 4 which is equal to 10 pounds. That is the tial weight of the four books. To find the weight of the fourth book, the three other weights are subtracted from 10 pounds:
Answer:
60T + 55T = 150
Step-by-step explanation:


The cars takes 1.304 hrs (1h 18 min aprox) to pass each other
Hope this helps