Of the 40 electronics components that a factory must manufacture, 30 percent would be most e¢ ciently manufactured by Machine A and the remaining 70 percent would be most efficiently manufactured by Machine B, though either machine could manufacture any of the 40 components. If 70 percent of the components were manufactured by Machine A and the remainder were manufactured by Machine B, what is thehighest possible number of components that were manufactured by the machine that would manufacture them the most efficiently?	Choose the correct choice: A) 30 B) 32 C) 60 D) 35 E) 36
A can manufacture 30 % of 40 efficiently, which is 12.   B can manufacure 70 % of 40 efficiently, which is 28.   Now 80 % of 40 are produced by A. This means 32 parts. Since A can produce 12 efficiently, all 32 are produced efficiently. Rest (8) is produced by B, which can produce max. 28 parts efficiently.   Hence parts that were produced efficiently = 32+28= 
<gadget id="calculator">32+28</gadget>
<output>60</output>
60. (60).
<result>C</result>
Of the 40 electronics components that a factory must manufacture, 30 percent would be most e¢ ciently manufactured by Machine A and the remaining 70 percent would be most efficiently manufactured by Machine B, though either machine could manufacture any of the 40 components. If 70 percent of the components were manufactured by Machine A and the remainder were manufactured by Machine B, what is thehighest possible number of components that were manufactured by the machine that would manufacture them the most efficiently?