Indian electricity prices have risen from ₹6.4 to ₹6.5 per unit. Arvi's factory expected to use 600 units in the next billing period. He installed solar panels at the start of they period. This reduced his electricity usage by 90%. By how much did arvi's bill increase?
a)₹6
b)₹38
c)₹39
d)₹54
Since he reduced the consumption by 90% so now total consumption = 10% of 600
Now total bill before price rise = Rs. 6.4
Total bill after price rise = Rs.
Therefore, increase in bill = 390-384= Rs. 6
Now total bill before price rise = Rs. 6.4
Total bill after price rise = Rs.
Therefore, increase in bill = 390-384= Rs. 6