If a river's pollution level is reduced by 25% and the current level is measured

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What’s inside this PDF?

Question: If a river\'s pollution level is reduced by 25% and the current level is measured at 200 units, what will be the pollution level after the reduction?

Options:

150 units
175 units
200 units
180 units

Correct Answer: 150 units

Solution:

25% of 200 = 0.25 * 200 = 50 units. New pollution level = 200 - 50 = 150 units.

If a river's pollution level is reduced by 25% and the current level is measured

Practice Questions

If a river's pollution level is reduced by 25% and the current level is measured at 200 units, what will be the pollution level after the reduction?

150 units
175 units
200 units
180 units

Questions & Step-by-Step Solutions

If a river's pollution level is reduced by 25% and the current level is measured at 200 units, what will be the pollution level after the reduction?

Step 1: Identify the current pollution level, which is 200 units.
Step 2: Calculate 25% of the current pollution level. This is done by multiplying 200 by 0.25.
Step 3: Perform the multiplication: 0.25 * 200 = 50 units.
Step 4: Subtract the amount of pollution reduced (50 units) from the current pollution level (200 units).
Step 5: Perform the subtraction: 200 - 50 = 150 units.
Step 6: The new pollution level after the reduction is 150 units.

Percentage Reduction – Understanding how to calculate a percentage of a given value and apply it to find a new value after reduction.
Basic Arithmetic – Performing multiplication and subtraction to arrive at the final answer.

If a river's pollution level is reduced by 25% and the current level is measured

What’s inside this PDF?

If a river's pollution level is reduced by 25% and the current level is measured

Practice Questions

Questions & Step-by-Step Solutions

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