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Lesson 5 of 7 · Single pie (percent/degree)

Difference

DI: Pie Charts · for IPMAT Indore, IPMAT Rohtak and JIPMAT · asked in JIPMAT 2022

The idea of Single pie (percent/degree)

A pie chart splits one total into sectors, given in percent or in degrees (360 degrees = 100%). Every question reads one or two sectors and turns them into an amount, a ratio, a difference or a change. JIPMAT asks a pie set almost every year: cost of production (2021), balls by colour and students by activity (2022), brand sales (2023), book production expenses (2024) and a family budget in degrees (2025). All of them are banked as PYQs in this chapter.

The exam method

  1. One conversion. 1% = total/100, or 1 degree = total/360. Write it at the top.
  2. Stay in shares. for ratios, "what percent of" and "how many times": the total cancels.
  3. Anchor on a given sector. when the total is missing.
  4. Changes on several sectors. add the changes in share points (A +50% of 45 = +22.5; E +10% of 22 = +2.2; total +24.7%).