Let's solve this step by step:

1. Let's assume the original price of petrol is $1 per litre. So, for $100, you can buy 100 litres of petrol.

2. Now, the price of petrol is increased by 20%. So, the new price is $1.20 per litre. With $100, you can now buy approximately 83.33 litres of petrol.

3. To keep the expenditure the same, you need to buy only 100 litres of petrol, not 83.33 litres.

4. The reduction in consumption is therefore (100 - 83.33) = 16.67 litres.

5. To find the percentage reduction, divide the reduction by the original amount and multiply by 100. So, (16.67 / 100) * 100 = 16.67%.

So, a person must reduce his consumption by 16.67% so that his expenditure on petrol does not increase.

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Let's solve this step by step:

1. Let's assume the original price of petrol is $1 per litre. So, for $100, you can buy 100 litres of petrol.

2. Now, the price of petrol is increased by 20%. So, the new price is $1.20 per litre. With $100, you can now buy approximately 83.33 litres of petrol.

3. To keep the expenditure the same, you need to buy only 100 litres of petrol, not 83.33 litres.

4. The reduction in consumption is therefore (100 - 83.33) = 16.67 litres.

5. To find the percentage reduction, divide the reduction by the original amount and multiply by 100. So, (16.67 / 100) * 100 = 16.67%.

So, a person must reduce his consumption by 16.67% so that his expenditure on petrol does not increase.

Knowee AI · Accepted Answer

Let's solve this step by step:

1. Let's assume the original price of petrol is $1 per litre. So, for $100, you can buy 100 litres of petrol.

2. Now, the price of petrol is increased by 20%. So, the new price is $1.20 per litre. With $100, you can now buy approximately 83.33 litres of petrol.

3. To keep the expenditure the same, you need to buy only 100 litres of petrol, not 83.33 litres.

4. The reduction in consumption is therefore (100 - 83.33) = 16.67 litres.

5. To find the percentage reduction, divide the reduction by the original amount and multiply by 100. So, (16.67 / 100) * 100 = 16.67%.

So, a person must reduce his consumption by 16.67% so that his expenditure on petrol does not increase.

In the new budget, the price of petrol is increased by 20%.How much percent must a person reduce his consumption so that his expenditure on it does not increase.16.67%15%17%None of these

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