Answer:
half a cup
Step-by-step explanation:
75% minus 25% is 50% aka 1 half
r = 25+b
n = 3b
n+r+b=435
3b+25+b+b=435
5b+25=435
5b=210
b=42
r = 25+42 = 67
n = 3(42) = 126
969
173 + 212 + 185 + 197 + 202 = 969
