Final answer:
Jamal's calculation of 2/5 times 75 correctly finds 40% of 75, which is 30. The conversion of 40% to a fraction (2/5) and subsequent multiplication by 75 leads to the correct result.
Step-by-step explanation:
To find 40% of 75, Jamal calculates 2/5 times 75, which does give the correct value for 40% of 75. In percentage terms, 40% is equivalent to 40/100, which can be simplified to 2/5 when reduced to the lowest terms. Therefore, when Jamal multiplies 2/5 by 75, he effectively multiplies 40 out of every 100 parts of 75, hence finding 40% of the whole.
To perform the calculation, you can follow these steps:
- Convert the percentage to a fraction: 40% = 40/100 = 2/5.
- Multiply the fraction by the number: 2/5 * 75.
- Calculate the product: 2/5 of 75 is 2 * (75/5) = 2 * 15 = 30.
Therefore, 40% of 75 is 30.