Table gives the installed electricity capacity (gigawatts) from solar, wind and coal, plus population (millions), for states X and Y in 2011 and 2021.
| State | Year | Solar | Wind | Coal | Population (million) |
|---|---|---|---|---|---|
| X | 2011 | 20 | 10 | 40 | 50 |
| X | 2021 | 28 | 15 | 42 | 60 |
| Y | 2011 | 15 | 8 | 50 | 60 |
| Y | 2021 | 20 | 10 | 55 | 68 |
In which state and for what type of energy source of electricity was the percentage decadal growth in installed capacity the maximum?
AState X, Solar
BState X, Wind ✓ Correct
CState Y, Solar
DState Y, Wind
Correct answer: (B) State X, Wind
Explanation
The maximum growth was for wind in State X, so the answer is State X, Wind.
In State X wind rose from 10 to 15, a growth of 50 percent.
In State X solar rose from 20 to 28, a growth of 40 percent.
In State Y solar grew by about 33 percent and wind by 25 percent.
So State X wind at 50 percent is the highest growth.
No other source and state exceeds this figure.
So the answer is State X, Wind.
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