How to sum the values when they are bigger than 25, 50, 75, (conditional) and they are from the same group?

ID = ['1_A' ; '1_A'; '1_A'; '2_B'; '2_B'; '3_C'; '3_C'; '3_C'; '3_C'] ;

pct = [6.3875; 5.8813; 25.5219; 54.5052; 5.3287; 7.7387; 6.9002; 24.0538; 29.8939]

I want to sum up the values that are under 25, and then the values greater than 50 but only from the same "group"

for example:

'1_A' > 25 = 12.2688

'1_A' > 50 = 25.5913

I was thinking in a conditional like this

uID = unique(ID)
B = ID;
for i=1:length(uA)
    idx = find(strcmp(ID, uID(i)));
    for j=1:length(idx)
        if ID <= 25
            SUM
        elseif ID >25 && ID <= 50
            SUM
        end
    end
end

Answer 1

[Wan Ji]

That's quite simple, you don't need to compare them

clc;clear
ID =      ['1_A' ; '1_A'; '1_A';  '2_B';  '2_B';  '3_C';  '3_C';  '3_C';  '3_C'] ;
[uID, ia, ic] = unique(ID,'rows');
pct =	[6.3875;	5.8813;	25.5219;	54.5052;	5.3287;	7.7387;	6.9002;	24.0538;	29.8939];
sum_below_25 = accumarray(ic, pct.*(pct<=25));
sum_gt_25_below_50 = accumarray(ic, pct.*(pct>25&pct<=50));
sum_gt_50 = accumarray(ic, pct.*(pct>50));

[DulceEien]

thank you so much

Answer 2

[Chunru]

ID =    {'1_A' ; '1_A'; '1_A';  '2_B';  '2_B';  '3_C';  '3_C';  '3_C';  '3_C'};
pct =	[6.3875;	5.8813;	25.5219;	54.5052;	5.3287;	7.7387;	6.9002;	24.0538;	29.8939];
%'1_A' <= 25 =    12.2688 
x = sum(pct(strcmp(ID, '1_A') & pct<=25 ))

x = 12.2688

%'1_A' 25-50 = 25.5913
x = sum(pct(strcmp(ID, '1_A') & pct>25 & pct<=50))

x = 25.5219

[DulceEien]

thank you for replying