medium · GRE Quant
Working alone, an older grain harvester can clear a certain field in 6 hours, and a newer harvester can clear the same field in 9 hours. Working together at their constant individual rates, how many hours would the two harvesters take to clear the field? Round to the nearest tenth.
Sign up free to see the explanation and track your rank →
More GRE Quant practice
- DUAL-SCALE GRAPH: Helix Biotech — Headcount and Revenue per Employee, 2022–2026 Left axis:
- A store marks up a product by 20% over its cost, then during a sale discounts the marked p
- Solve for x: x - 5 = √(x - 3)
- Which of the following must be a factor of the integer n if n^2 is divisible by 72?
- Common information: n is an integer and 2^n = k. Quantity A: 2^n+1 + 2^n+1 Quantity B: 2^n
- 0 < a < b < 1. Quantity A: dfracab Quantity B: dfraca+1b+1
- A logistics firm reports monthly shipping cost and on-time delivery rate for one lane. The
- A fair six-sided die (faces 1 through 6) is rolled twice, and the two results are recorded