A
B
C
D
Explanation
Correct answer: B.
Choice B is correct. It's given that of the objects in the box are balls. Therefore, the number of balls in the box can be found by calculating of , which is equal to , or .
Desmos solution:
Note: The expression 4%\operatorname{of}350 directly computes the number of balls.
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice A
Choice A is incorrect. This is the percentage of objects in the box that are balls, not the number of balls in the box.
Choice C
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D
Choice D is incorrect and may result from conceptual or calculation errors.