The line chart given below shows the production of refrigerator by 6 companies.

What is the difference between production of refrigerator by company E, F and G together and the production of refrigerator by company H, I and J together?

120

Production of refrigerator by company E, F and G = 500 + 470 + 460 = 1430

Production of refrigerator by company H, I and J = 440 + 420 + 450 = 1310

Required difference = 1430 - 1310 = 120