hard · GMAT Quant
A financial advisor evaluates 300 investment instruments. Each instrument is classified into at least one of three asset classes: Equities, Bonds, or Commodities. There are 200 instruments classified as Equities, 170 as Bonds, and 130 as Commodities.
If the number of instruments in exactly two asset classes is three times the number of instruments in all three asset classes, how many instruments are classified into exactly one asset class?
- 140
- 120
- 40
- 160
- 200
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