Solution: How much is the average charge for the electrical energy per 100 kw-hr?

To conserve energy due to the present energy crisis, the Meralco tried to re-adjust their charges to electrical energy users who consume more than 2000 kw-hrs.

How much is the average charge for the electrical energy per 100 kw-hr?

Problem Statement: CE Board May 1992

To conserve energy due to the present energy crisis, the Meralco tried to re-adjust their charges to electrical energy users who consume more than 2000 kw-hrs. For the first 100 kw-hr, they charged 40 centavos and increasing at a constant rate more than the preceding one until the fifth 100 kw-hr, the charge is 76 centavos. How much is the average charge for the electrical energy per 100 kw-hr?

Problem Answer:

The average charge for the electrical energy per 100 kw-hr is 58 centavos.

Solution:

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