Mathematics · Ratio and Proportion
A box has 450 balls, each either white or black, there being as many metallic white balls as metallic black balls. If 40% of the white balls and 50% of the black balls are metallic, then the number of non-metallic balls in the box is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1150
- 2200
- 3250✓
- 4300
Correct answer
250
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