medium · GRE Quant
DUAL-SCALE GRAPH — GreenGrid Utility: Weekly Energy Output. Bars show Solar Output in megawatt-hours (MWh, left axis); the line shows the percentage of TOTAL output that came from solar (right axis), for four weeks. Left axis (Solar MWh): gridlines 0; 500; 1,000; 1,500; 2,000. Right axis (Solar % of total): gridlines 0%; 20%; 40%; 60%; 80%. Exact values: Week 1 — Solar bar: 600 MWh; Solar-share line: 40% Week 2 — Solar bar: 900 MWh; Solar-share line: 60% Week 3 — Solar bar: 800 MWh; Solar-share line: 25% Week 4 — Solar bar: 1,200 MWh; Solar-share line: 50% Total output for a week equals solar output divided by the solar share. In which week was TOTAL energy output (from all sources) the greatest?
- Week 1
- Week 2
- Week 3
- Week 4
- Weeks 1 and 2 (tied for greatest)
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