The question is based on the pie chart given below. Constituents of Sunrays received in 1 minute.
Total sunrays received in 1 minute = 3600 units.
The amount of Alpha rays received in 2 minutes is how many more/less than the amount of radio waves received in 4 minutes?
According to the pie chart,
Difference: 2160 − 720 = 1440 units