Each Machine of type X has 3 steel parts and 2 chrome parts. Each machine of type Y has 4 steel parts and 7 chrome parts. If a certain group of type X and type Y machines has a total of 20 steel parts and 22 chrome parts, how many machines are in the group	Choose the correct choice.
A) 2  B) 3  C) 6  D) 8  E) 9
Look at the below representation of the problem:   Steel Chrome total   X 3 2 20 &gt;&gt;no. of type X machines=20/5= 
<gadget id="calculator">20/5</gadget>
<output>4</output>
4   Y 4 7 22 &gt;&gt;no. of type Y machines=22/11= 
<gadget id="calculator">22/11</gadget>
<output>2</output>
2   So the answer is 6 i.e 6.
<result>C</result>
Each Machine of type X has 3 steel parts and 2 chrome parts. Each machine of type Y has 4 steel parts and 7 chrome parts. If a certain group of type X and type Y machines has a total of 20 steel parts and 22 chrome parts, how many machines are in the group