Marianne buys 16 bags of potting soil which come in 5/8 pound bags. this equals to 10 pounds of potting soil. her father calls and says he needs 13 pounds of potting soil, how many additional bags should marianne buy ?

5 bags

Step-by-step explanation:

Given Marianne buys 16 bags of potting soil which come in 5/8 pound bags

The above provides 10pounds of potting soil already

Now her father says he needs 13 pounds So Marianne should get an extra of 13 - 10 =3 pounds of potting soil

We know that 1 bag contains 5/8 pounds of potting soil

x bags contain 3 pounds of potting soil

On cross multiplication we get

x =

since x is an integer x = 5 bags  

Note that an extra amount of soil will be remained unused

students group

step-by-step explanation:

a person who   joins a party or a seminar can explain his feelings about that particular occasion better more than anyone else.

as bella managed a show for the students in the school and invited students to watch that show

hence

students group will be the best group to survey to find this information