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.
Work this out by listing every element percentage and checking which ones route into B, instead of jumping straight to addition.
Elements 1, 2, 3, and 6: These feed other industries in the chart, not B, so their shares of 10 percent, 10 percent, 10 percent, and 5 percent stay out of B's total.
Element 4 (25 percent): This element's arrow leads into B, so its full 25 percent share counts toward B.
Element 5 (40 percent): This element's arrow also leads into B, adding another 40 percent to B's total.
Adding only the two shares that actually reach B gives $25 + 40 = 65$ percent.
Let's summarize:
Only the elements whose arrows point into B should be added, everything else is a distraction.
That gives a clean 65 percent, which is a determinable value, not an unknown one.
