Final answer:
The remaining number of donations needed to reach the target for a blood drive is calculated by subtracting the donations collected so far from the total donations needed, represented by the formula n - x.
Step-by-step explanation:
To calculate the remaining number of blood donations needed to reach the target for the blood drive, you would subtract the number of donations collected so far from the total number needed. If n is the target number of donations and x is the number of donations collected so far, the remaining number of donations needed is n - x.
Example:
If a blood drive aims to collect 500 donations (n = 500) and has so far collected 300 donations (x = 300), then the remaining number of donations needed is:
500 (n) - 300 (x) = 200 donations
To find the remaining number of blood donations needed to reach the target, you can subtract the number of donations collected so far from the target number. So the formula would be: remaining donations = target - collected donations.
For example, if the target is 100 donations and you have collected 75 donations so far, the remaining number of donations needed would be 100 - 75 = 25.
In this case, you would subtract the value of x (donations collected so far) from the value of n (target number of donations) to find the remaining number of donations needed.