Dan wants to determine the number of liters of a 20% acid cleaning solution that he should combine with an 80% acid cleaning solution to create 50 liters of a 60% acid cleaning solution.

Part A

Let z represent the number of liters of the 20% acid cleaning solution. Which equation represents this situation?

0.6(50) = 0.22 +0.87

0.23 +0.8(50 - 2) = 0.6(50)

0.6(50) = 0.2x + 0.8(x - 50)

0.22 + 0.8(2 + 50) = 0.6(50)

Part B

How many liters of the 20% acid cleaning solution should Dan use? Round your answer to the nearest tenth of a liter.

Dan should use

liters of the 20% acid cleaning solution

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation:

could u provide us some answer choices or hmm idk maybe a table for us to anser with ? ?

$113.42

i hope that is right.

step-by-step explanation: