Final answer:
To find the whole in the equation 15/100 = 120/N, you cross-multiply to get 15N = 12000. Dividing both sides by 15 gives N = 800. Therefore, the value 800 is the correct whole for the proportion, but it is not listed among the provided answer options.
Step-by-step explanation:
To solve the proportion 15/100 = 120/N, you need to find the value of N that makes the equation true. You can do this by cross-multiplying, which means multiplying the numerator of one fraction by the denominator of the other fraction and then setting the two products equal to each other. So, you multiply 15 by N and 100 by 120, which gives you the equation 15N = 12000. Then, divide both sides by 15 to find N:
- 15N = 12000
- N = 12000 / 15
- N = 800
The correct answer is not listed among the provided options A, B, C, and D, as the calculated value of N is 800.