turkey-yks 2011 Q24

turkey-yks · Other · ygs Not Maths
The number of work machines produced at a factory is recorded at the end of each day. The records kept represent the total number of work machines produced on that day and before that day. The records kept over five working days are given below.
Monday and before:20
Tuesday and before:$x$
Wednesday and before:90
Thursday and before:140
Friday and before:$y$

The number of work machines produced by Friday and before is four times the number produced by Tuesday and before. Also, the number of machines produced on Friday is twice the number produced on Tuesday.
Accordingly, how many work machines were produced on Wednesday?
A) 60 B) 40 C) 30 D) 45 E) 55
The number of work machines produced at a factory is recorded at the end of each day. The records kept represent the total number of work machines produced on that day and before that day. The records kept over five working days are given below.

\begin{center}
\begin{tabular}{ l l }
Monday and before: & 20 \\
Tuesday and before: & $x$ \\
Wednesday and before: & 90 \\
Thursday and before: & 140 \\
Friday and before: & $y$ \\
\end{tabular}
\end{center}

The number of work machines produced by Friday and before is four times the number produced by Tuesday and before. Also, the number of machines produced on Friday is twice the number produced on Tuesday.

Accordingly, how many work machines were produced on Wednesday?

A) 60
B) 40
C) 30
D) 45
E) 55