The price of petrol was 120.8 cents per litre in January. It increased by 3.5% in February, increased by 8% in March, and decreased by 4% in April. The price of petrol per litre in May, in cents per litre, is closest to:

Question

BlackTom AI · Accepted Answer

We start with the January price: 120.8 cents per litre.

Step 1: Apply the February increase of 3.5%.
- Calculation: 120.8 × 1.035 = 125.028 cents.
- So, price in February is 125.028 cents.

Step 2: Apply the March increase of 8%.
- Calculation: 125.028 × 1.08 = 135.03024 cents.
- So, price in March is 135.03024 cents.

Step 3: Apply the April decrease of 4%.
- Calculation: 135.03024 × 0.96 = 129.6290304 cents.
- So, price in April is 129.6290304 cents.

Step 4: Determine the May price, which is already given by applying the prior changes up to April; no further adjustments are described beyond April.
- Therefore, May price ≈ 129.6290304 cents.

Step 5: Round to the nearest cent as the problem asks for the price in cents per litre.
- 129.6290304 rounds to 129.63 cents per litre when rounding to two decimals, which is effectively 129.6 cents when expressed to one decimal place.

Note: The provided answer choices are not visible in the prompt, but the calculated May price is approximately 129.63 cents, which aligns with an option similar to 129.6 when rounded to one decimal place.

The price of petrol was 120.8 cents per litre in January. It increased by 3.5% in February, increased by 8% in March, and decreased by 4% in April. The price of petrol per litre in May, in cents per litre, is closest to:

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