Answer:
The electricity cost will be Option d ($0.011).
Explanation:
The given values are:
1 ton coal = 28 million Btu/ton
Or,
1 metric tonne = 28 × 10⁶ Btu
As we know,
Coal's cost,
⇒ [tex]C=30/metric \ tonne[/tex]
[tex]=\frac{30}{28\times 10^6}[/tex]
⇒ [tex]H=10300 \ btu/Kwh[/tex]
Now,
Electricity's cost,
⇒ [tex]C\times H[/tex]
On substituting the estimated values, we get
⇒ [tex]\frac{30}{28\times 10^6}\times 10300[/tex]
⇒ [tex]0.011/ Kwh[/tex]
