Ireally don't understand this question, pls

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Combine the information in the problem and the chart using the average balance method to solve the problem.

Once george got to know adam, they found that they really liked each other. this is an example of what factor in friendship