Waec 2025 Mathematics Question 6

Practice essay / theory question 6 from the 2025 Waec Mathematics examination. This question covers Commercial Arithmetic .

Waec 2025 Mathematics Essay / Theory

Topic: Commercial Arithmetic

Question 6 WAEC • 2025 • MATHEMATICS • essay

In a certain year, the consumption pattern of electricity charges in a town was as follows: the cost of the first 30 units was $ \$ 1.00 $ per unit; the cost of the next 30 units was $ \$ 7.00 $ per unit; the cost of each additional unit was $ \$ 5.00 $.

( a )

If Amaka used 420 units of electricity in January that year, calculate the amount paid.

( b )

If Amaka paid $ \$ 2,740.00 $ in the month of February, calculate the number of units of electricity consumed.

( c )

Find, correct to two decimal places, the percentage change in units of electricity consumed by Amaka in January and February.

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This is Waec 2025 Mathematics Question 6. It is one of the essay questions from the 2025 Waec Mathematics examination.

The question covers Commercial Arithmetic .

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