During a recent telethon, people pledged $25 or $50. Twice as many people pledged $25 as $50. Altogether, $18,000 was pledged. How many people pledged $25?
N*25+ N/2 *50=18000
solve for N.
360 people pledged $25-9,000
180 people pledged $50 - 9,000
To find the number of people who pledged $25, we can use a system of equations. Let's assume the number of people who pledged $50 is x.
According to the problem, twice as many people pledged $25 as $50, so the number of people who pledged $25 is 2x.
We also know that the total amount pledged is $18,000. The amount pledged by each person who pledged $25 is $25, and by each person who pledged $50 is $50.
So we can create an equation for the total amount pledged:
25 * (2x) + 50 * x = 18,000
Simplifying the equation:
50x + 50x = 18,000
100x = 18,000
Dividing both sides by 100:
x = 180
Therefore, the number of people who pledged $50 is 180. Since twice as many people pledged $25, the number of people who pledged $25 is 2 * 180 = 360.
So, 360 people pledged $25.