The cost of electricity required to deposit `1g Mg` is Rs. 5.00. the cost of `30g` of `Al` to be deposited is Rs. `X`. Find the value of `x/40`?

Options

A. Rs 10.00
B. Rs 27.00
C. Rs 44.44
D. Rs66.67

Answer

D

Explanation

`96,500 C-= 12 g` of Mg
`therefore `1 g of Mg` -= (96500)/(12)C=Rs. 5`
9 g of Al requires `-=` 96500 C
`therefore` 10 g of Al requires `(96500xx9)/(9)C`
Now `(96500)/(12)C=Rs. 5`
`therefore (96500xx10)/(9)=Rs. 66.67`