Question

Chloe spent £400 on petrol this year. Each year the amount she spends on petrol decreases by 25%. How much will she spend on petrol: a) Next year? b) The year after next?

Answer 1

Chloe will spend £300 on petrol next year and £225 the year after next, as her petrol expenses decrease by 25% each year.

Step-by-step explanation:

The amount Chloe spends on petrol decreases by 25% each year. To find out how much she will spend next year, we need to calculate 75% of the current year's spending, because a 25% decrease implies she will spend 75% of the amount from the current year. The calculation for next year's spending on petrol would be £400 multiplied by 0.75.

For the year after next, we will perform the same calculation on the result from next year's spending. That is, we take 75% of next year's spending to find out the decreased amount for the succeeding year.

Calculations:

1. Next year's spending: £400 * 0.75 = £300
2. The year after next's spending: £300 * 0.75 = £225

Therefore, Chloe will spend £300 on petrol next year, and £225 the year after next.

Answer 2

Chloe will spend £300 on petrol next year, after a 25% reduction from her current expenditure of £400. Following the same reduction rate, she will then spend £225 the year after that.

Step-by-step explanation:

Chloe is experiencing a yearly decrease in her petrol expenses by 25%. To find out how much she will spend on petrol in the coming years, we must calculate the decreased amount for each year.

Next Year's Expenditure:

To calculate Chloe's expenditure on petrol for next year, we take her current expenditure (£400) and reduce it by 25%. Here's the calculation:

Next Year's Expenditure = Current Expenditure - (25% of Current Expenditure)

Next Year's Expenditure = £400 - (0.25 × £400)

Next Year's Expenditure = £400 - £100

Next Year's Expenditure = £300

The Year After Next's Expenditure:

To calculate the expenditure for the year after next, we apply the same 25% reduction to next year's expenditure:

The Year After Next's Expenditure = Next Year's Expenditure - (25% of Next Year's Expenditure)

The Year After Next's Expenditure = £300 - (0.25 × £300)

The Year After Next's Expenditure = £300 - £75

The Year After Next's Expenditure = £225

Therefore, Chloe will spend £300 on petrol next year and £225 the year after next.