This may be correct but since i think i understand the answer is c
Answer:
100
Step-by-step explanation:
20/150 to get ratio
Ratio*750 to get defective
Step-by-step explanation:
Volume of cylindrical container

✿————✦————✿————✦————✿
This is the answer:
✿————✦————✿————✦————✿
Step:
* To raise a power to another power, multiply the exponents. Multiply 1/2 and −2 to get −1.
* To raise a power to another power, multiply the exponents. Multiply −1/4 and −2 to get 1/2.
Okay so subtract 50 from both sides and you would get 360=90x and then divide each side by 90 and you would get x= 4 so it took 4 hours