The pie-chart shows percentage-wise distribution of teachers who teach six different subjects. Study the pie-chart and answer the question.

Total number of teachers = 1650

What is the difference between the total number of teachers who teach Physics and Maths and the total number of teachers who teach chemistry and biology?

66

Total number of teachers = 1650

Number of teachers who teach Physics and Maths = 18% + 14% = 32%

Number of teachers who teach chemistry and biology = 24% + 12% = 36%

Now ,

Difference between the total number of teachers who teach Physics and Maths and the total number of teachers who teach chemistry and biology

= \(\frac{36 - 32 }{100 }\) × 1650

= \(\frac{1 }{25 }\) × 1650

= 66