# math

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during a recent telethon people pledged \$25 or \$50. twice as many people pledged \$25 as \$50. altogether, \$18000 was pledged. how many people pledged \$25?

• math -

Let x = # pledging \$25 and Y = # pledging \$50.

x = 2y

25x + 50y = 18000

Substitute 2y for x in the second equation to solve for y. Put that value in the first equation to find x. Check by putting both values into the second equation.

• math -

X=360 ppl y=180 ppl

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