Which correctly explains how to solve this problem?

a number is multiplied by 2. eight is added to the product. this sum is then divided by 5. the answer is 8.

what was the original number?

a.
start with 8. multiply 8 by 5. then add 8 and multiply the answer by 2.

b.
start with 8. add 8 and 5. then subtract 8 and multiply the answer by 2.

c.
start with 8. multiply 8 by 5. then subtract 8 and divide the answer by 2.

Julius went on a volunteer trip to centralamerica and took medical supplies with him. he packed a bag with 50 pounds of supplies. he brought pieces of equipment that weighed10 pounds each and bottles of medicine thatweighed pound each prepresents thenumber of pieces of equipment he broughtand b represents the number of bottles ofmedicine he brought then the total weight canbe represented by the equation 10p+b 50.the brought 3 pieces of equipment, how manybottles of medicine did he bring?