For the first one it might be 26? i’m not so sure
Answer: 40%
Step-by-step explanation:
Given,
Initial mass = 6.5kg
final mass = 3.9kg
So, Change in mass = initial mass - final mass
= 6.5 - 3.9
= 2.6 kg
and,
Change in percentage of mass = 
Change in percentage of mass = 
= 40
Total percentages of student who scored As
= 25+35= 60%
Probability of a girl who got A = 35/60
If you simplify the ans will be 7/12