Study the bar graph showing the quantity and value of engineering-goods…

2009

Study the bar graph showing the quantity and value of engineering-goods exports from 2003 to 2007, then answer the question.

Bar graph titled Export of Engineering Goods. Quantity in lakh tonnes and value in crore rupees are: 2003, quantity 15 and value 25; 2004, quantity 25 and value 15; 2005, quantity 25 and value 50; 2006, quantity 50 and value 50; 2007, quantity 35 and value 25.

In which year was the quantity of exports 100% higher than in the previous year?

Answer: C. 2006 — ConceptPercentage increase compares the change with the previous value: percentage increase = (new value − previous value) ÷ previous value × 100%. An…

  1. A.

    2004

  2. B.

    2005

  3. C.

    2006

  4. D.

    2007

Attempted by 5 students.

Show answer & explanation

Correct answer: C

Concept

Percentage increase compares the change with the previous value: percentage increase = (new value − previous value) ÷ previous value × 100%.

An increase of 100% means the new value is twice the previous value.

Application

  1. Read the export quantities from the graph: 2003 = 15, 2004 = 25, 2005 = 25, 2006 = 50, and 2007 = 35 lakh tonnes.

  2. For 2004: (25 − 15) ÷ 15 × 100% = 66.67%.

  3. For 2005: (25 − 25) ÷ 25 × 100% = 0%.

  4. For 2006: (50 − 25) ÷ 25 × 100% = 100%.

  5. For 2007: (35 − 50) ÷ 50 × 100% = −30%, which is a decrease.

Cross-check

The 2006 quantity is 50 lakh tonnes, exactly twice the 2005 quantity of 25 lakh tonnes, so the increase is 100%.

Therefore, the required year is 2006.

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