Yes, you can use the weightage information of marks to determine whether you should retake the GRE for a higher score. Here's how you can approach it:

1. Understand the weightage:
- Look for information on how much weight the GRE score carries in the admissions process of the specific graduate programs you are interested in.
- Check the websites of the universities or programs you are applying to, as they may provide details on the importance they place on GRE scores.
- Some programs may have minimum score requirements, while others may consider the GRE score alongside other factors such as GPA, recommendation letters, and statement of purpose.

2. Assess your current score:
- Determine your current GRE score and compare it to the average or minimum scores of the programs you are targeting.
- If your score is significantly below the average or minimum requirement, it may be worth considering retaking the GRE for a higher score.
- However, if your score is already competitive or exceeds the average scores of your desired programs, retaking the exam may not be necessary.

3. Consider the competitiveness of the programs:
- If you are aiming for highly competitive programs, where a higher GRE score can give you a significant advantage, it may be wise to retake the exam even if your current score meets the minimum requirements.
- On the other hand, if you are applying to less competitive programs or have strong qualifications in other areas (such as research experience or publications), a slightly lower GRE score may not hinder your chances of admission.

4. Evaluate your preparation and potential for improvement:
- Reflect on your previous preparation for the GRE and identify areas where you can improve.
- Consider whether you have the time and resources to adequately prepare for a retake, and assess your potential for achieving a higher score.
- If you believe that with additional preparation you can significantly improve your score, it may be worth retaking the GRE.

5. Consider the cost and time implications:
- Keep in mind that retaking the GRE involves additional costs, including registration fees and study materials.
- Consider whether you have enough time to adequately prepare for a retake before the application deadlines of your desired programs.

Conclusion:
By considering the weightage of GRE scores in the admissions process, your current score, the competitiveness of the programs you are applying to, your potential for improvement, and the cost and time implications, you can make an informed decision on whether to retake the GRE for a higher score.