Larry's construction team is working on a project to build several small buildings. They want the overall average time spent on each building to be 15 hours or less. So far, they have spent the following amounts of time on the first four buildings: 17 hours, 10 hours, 19 hours, and 13 hours. How many hours should they spend building the fifth building in order to achieve their goal of an average of 15 hours or less?

d no solution

step-by-step explanation:

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.

i believe the answer is b

step-by-step explanation: