46.1% or F
It is 59.6%. How that translates to grades depends on the scoring scheme.
If 136 is 25%, then the total is 136 * 4 = 544.78/544 = 0.1434 or about 14.34%
68% D+
4
4
1.0
The grade is 66.25%
50 points added to a school grade of 54 = 104
17*16/2 = 136
The answer depends on the grade boundaries
As a percentage it is 80.8%
A grade A at AS level (if you did not carry on the subject until the end of A2 A Level) is worth 60 points. A grade A from a full A Level is worth 120 points. For the full UCAS tarfiff table, please see the related link.