Answer:
their all good but B is blank
Let's factorise it :
Using Distributive property we get :
⠀
Therefore,
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
1/2 or 0.5 hope this helps
