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anne21
Oct 23, 2007, 06:47 PM
word problems-quadratic equation
Students sent flowers costing $20 to a sick classmate. There were four fewer students contributing than was planned, requiring each of the others to give 25 cents more. How many students contributed to the gift?

HELP!

terryg752
Oct 23, 2007, 10:19 PM
Let n be the number that contributed.

Let x be the originally planned contribution

You should get:

n (x + .25) = 20

(n + 4) x = 20

Solve these equations