Deangelo needs 100 lb of garden soil to landscape a building. in the company’s storage area, he finds 2 cases holding 24 3/4 lb of garden soil each, and a third case holding 19 3/8 lb. how much gardening soil does deangelo still need in order to do the job?

pounds

Step-by-step explanation:

We have been given that DeAngelo needs 100 lb of garden soil to landscape a building.        

First of all, we will find total amount of garden soil available in storage area.

Convert mixed fraction into improper fraction:

Make a common denominator:

Combine numerators:

Now, we will subtract this amount from 100.

Therefore, DeAngelo still needs pounds of gardening soil in order to do the job.

i think c. but don't trust it.

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional