hard · GMAT Quant
Three positive numbers have arithmetic mean 4, harmonic mean 36/11, and product 48. The harmonic mean of three positive numbers u, v, and w is defined as 3/(1/u+1/v+1/w).
If each of the original three numbers is increased by 1, what is their new harmonic mean?
- dfrac3611
- dfrac10571
- dfrac31571
- dfrac31559
- 5
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