Walter is mixing cement for his new patio. he knows he needs to use a water-to-cement ration of 20-30. what percent of his total mixture is water?

It would be 20% because they asked for  water to cement ratio of 20-30 and since they asked for water and water comes before cement then you pick the first number and that is 20 and all you do is turn it into a percent which is 20%

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant