The pie chart given below shows the production of 6 different factories. The total production of all these 6 factories is 12000. The production of a particular factory is shown as a percent of total production of all these 6 factories.

J1 = The value of average production of P and R.

J2 = The value of average production of Q and T.

What is the value of (J1 - J2)?

420

Total production of P & R = (12% + 30%) = 42% of 1200

= \(\frac{42}{100}\) × 12000 = 5040

J1 = The value of average production of P and R

= \(\frac{5040}{2}\) = 2520

Total production of Q & T = ( 15% + 20% ) = 35% of 12000

= \(\frac{7}{20}\) × 12000 = 4200

J2 = The value of average production of Q and T

= \(\frac{4200}{2}\)  = 2100

Now , (J1 - J2) = 2520 - 2100 = 420