Question

Babaganoush’s electricity supply company charges him a fixed quarterly sum plus a rate per unit for electricity used. In the most expensive quarter last year (January to March), he used 2,400 units and his bill was $320. In the least expensive quarter (July to September), he used 800 units and his bill was $144. He is now adding extra insulation to his home which is expected to reduce his overall electricity consumption by 25%.

What can he expect his January to March bill to be next year (if there are no increases in overall tariffs)?

Answer 1

14,848.25

Explanation:

2400+800=3200

320+144=464

25 3200 464

---- ------ ----= 14,848.25

100 x x

25x3200x464 divided by 100

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