Answer:
30 blue marbles
Step-by-step explanation:
for things l;ike this where ite percentage is in the tens place I like finding what 10% is, I do this by dividing it by 10, so, 75/10=7.5. SO then you want to multiply that by four because 10% times 4 = 40% which is the equation you need so (this part isnt needed but its more visually descriptive) [tex]\frac{10}{7.5} *4=\frac{40}{30}[/tex]
