You are here:

Algebra/Electricity Bill


Indian electricity prices have risen from Rs.6.4 to Rs.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 that period. This reduced electrical usage by 90%. How much did Arvi's bill decrease?
Please answer the question sir.
Thanking You in advance.

Arvi expects to use 600 units in the next billing period.

His bill will be reduced by multiplying the amount expected by 0.90.

The bill will be increased by multiplying by 6.5/6.4.

The old bill would have been found by taking 600 * 6.4 = 3,840.

The new bill is found by taking this 3,840 * 0.9 * (6.5/6.4).

That gives Rs.3,510.

This is a reduction of Rs.3,840 - Rs.3,510 = Rs.330.


All Answers

Answers by Expert:

Ask Experts


Scott A Wilson


Any algebraic question you've got. That includes question that are linear, quadratic, exponential, etc.


I have solved story problems, linear equations, parabolic equations. I have also solved some 3rd order equations and equations with multiple variables.

Documents at Boeing in assistance on the manufacturiing floor.

MS at math OSU in mathematics at OSU, 1986. BS at OSU in mathematical sciences (math, statistics, computer science), 1984.

Awards and Honors
Both my BS and MS degrees were given with honors.

Past/Present Clients
Students in a wide variety of areas since the 80's; over 1,000 of them have been in algebra.

©2016 All rights reserved.