1) The ratio table shows the amounts of sand and water in a concrete mixture. Which fraction represents the ratio for the gallons of water to bags of sand?
A)
B)
C)
D)

2) How many bags of sand should be mixed with 12 gallons of water?
A) 22 bags
B) 24 bags
C) 28 bags
D) 30 bags

Question:

The ratio table shows the amounts of sand and water in a concrete mixture. Which fraction represents the ratio for the gallons of water to bags of sand?

Solution:

Divide bags of sand by gallons of water

The ratio is the same

Which means,

Thus option D is correct

Question:

How many bags of sand should be mixed with 12 gallons of water?

Solution:

Let "x" bags of sand should be mixed with 12 gallon of water

From above found,

Hence, 28 bags of sand should be mixed with 12 gallons of water

the answer is  

a.

4,624π mm2

step-by-step explanation: