Final answer:
To determine how many pints of water are in the puddle after a 21% increase, multiply the original 72 pints by 0.21 to find the added amount (15.12 pints), then add this to the original amount, resulting in approximately 87 pints.
Step-by-step explanation:
To find out how many pints of water are now in the puddle after a rainstorm added 21% more water, we start with the original amount of 72 pints. Since 21% more water has been added, we calculate the increase by finding 21% of 72 pints. A puddle of water contained 72 pints of water. A rainstorm added 21% more water to the puddle. To find out how many pints of water are now in the puddle, you can calculate 21% of 72 and add it to 72.
To calculate 21% of 72, multiply 72 by 0.21. The result is 15.12.
Adding 15.12 to 72 gives you the approximate amount of water in the puddle now, which is 87.12 pints.
To do this:
- Convert the percentage to a decimal by dividing by 100: 21% → 0.21.
- Multiply the original amount of water (72 pints) by the decimal: 72 * 0.21 = 15.12 pints.
- Add this increase to the original amount of water to find the total: 72 + 15.12 = 87.12 pints.
After the rainstorm, the puddle contains approximately 87 pints of water, as we round 87.12 to the nearest pint.