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Mix



Pounds of


concrete







Pounds of water


required









Mix


1




50
19





Mix


2




80
34




A paver needs a mix such that the water to concrete ratio, as a decimal, is less than 0.5 for durability but greater than 0.35 for workability. Which of the mixes in the table meets the paver's requirements?
Choose 1 answer:
(A) Only mix 1
(B) Only mix 2
(C) Both mix 1 and mix 2
(D) Neither mix 1 nor mix 2

\begin{tabular}{lll} \newlineMix & \begin{tabular}{l} \newlinePounds of \\\newlineconcrete\newline\end{tabular} & \begin{tabular}{l} \newlinePounds of water \\\newlinerequired\newline\end{tabular} \\\newline\hline \begin{tabular}{l} \newlineMix \\\newline11\newline\end{tabular} & 5050 & 1919 \\\newline\begin{tabular}{l} \newlineMix \\\newline22\newline\end{tabular} & 8080 & 3434 \\\newline\hline\newline\end{tabular}\newlineA paver needs a mix such that the water to concrete ratio, as a decimal, is less than 00.55 for durability but greater than 00.3535 for workability. Which of the mixes in the table meets the paver's requirements?\newlineChoose 11 answer:\newline(A) Only mix 11\newline(B) Only mix 22\newline(C) Both mix 11 and mix 22\newlineD Neither mix 11 nor mix 22

Full solution

Q. \begin{tabular}{lll} \newlineMix & \begin{tabular}{l} \newlinePounds of \\\newlineconcrete\newline\end{tabular} & \begin{tabular}{l} \newlinePounds of water \\\newlinerequired\newline\end{tabular} \\\newline\hline \begin{tabular}{l} \newlineMix \\\newline11\newline\end{tabular} & 5050 & 1919 \\\newline\begin{tabular}{l} \newlineMix \\\newline22\newline\end{tabular} & 8080 & 3434 \\\newline\hline\newline\end{tabular}\newlineA paver needs a mix such that the water to concrete ratio, as a decimal, is less than 00.55 for durability but greater than 00.3535 for workability. Which of the mixes in the table meets the paver's requirements?\newlineChoose 11 answer:\newline(A) Only mix 11\newline(B) Only mix 22\newline(C) Both mix 11 and mix 22\newlineD Neither mix 11 nor mix 22
  1. Calculate Ratio Mix 11: Calculate the water to concrete ratio for Mix 11. 1919 pounds of water ÷\div 5050 pounds of concrete = 0.380.38
  2. Check Ratio Mix 11: Check if Mix 11's ratio is between 0.350.35 and 0.50.5. \newline0.35<0.38<0.50.35 < 0.38 < 0.5
  3. Calculate Ratio Mix 22: Calculate the water to concrete ratio for Mix 22.\newline3434 pounds of water ÷\div 8080 pounds of concrete = 0.4250.425
  4. Check Ratio Mix 22: Check if Mix 22's ratio is between 0.350.35 and 0.50.5.\newline0.35<0.425<0.50.35 < 0.425 < 0.5
  5. Determine Meeting Requirements: Determine which mix or mixes meet the paver's requirements.\newlineBoth Mix 11 and Mix 22 have ratios between 0.350.35 and 0.50.5.

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