Jackie began her day with a pocketful of jelly beans. she gave half of them to her friend marcus, and then a third of what she had left to shelby. finally, she and her sister each ate five jellybeans and no jellybeans remained. how many jellybeans did she give to marcus?
18 jellybeans
a. 15 jellybeans.
b. 12 jellybeans
c. 24 jellybeans
d. 24 jellybeans.

a. 15 Jellybeans.

Step-by-step explanation:

Let "a pocketful of jelly beans" = x jelly beans.

"She gave half of them to her friend Marcus"

Now she has x/2 jelly beans left.

"and then a third of what she had left to Shelby"

If she gives away 1/3 of an amount, she has left 2/3 of the amount.

Now she has (2/3)(x/2) = x/3

She now has 1/3 of the original amount.

"Finally, she and her sister each ate five jellybeans and no jellybeans remained."

They ate a total of 10 jelly beans, and none were left.

The amount remaining, x/3 was 10.

x/3 = 10

Multiply both sides by 3:

x = 30

She started with 30 jellybeans.

"She gave half of them to her friend Marcus"

30/2 = 15

a. 15 Jellybeans

the answer to this question is in the pic

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.