Instructions (Q. 46 to 48): The chart below shows six elements, numbered 1 to 6, along with their percentage share of total annual production. Each element is processed by one or more of three industries, A, B, and C, which in turn supply primary users P through W, each shown with its percentage share of total usage. The total production equals 100 percent, which equals 1,00,000 tons. Study the chart and answer the questions that follow.
Industry B processes what percentage of the total production of the listed elements?
Show Hint
Add up only the percentage shares of the elements whose arrows point into industry B.
Step 1: Find every element that feeds into industry B. Tracing the arrows into the middle of the chart, industry B receives inflow from element 4, which has a 25 percent share, and element 5, which has a 40 percent share.
Step 3: Rule out the other options. 25 percent alone only accounts for element 4, and 40 percent alone only accounts for element 5, so both undercount B's true share. The total is not undetermined either, since the chart clearly labels every arrow into B.
Final Answer: Industry B processes 65 percent of the total listed production. \[ \boxed{65\%} \]
