SOLUTION: When the number of people who contribute equally to bail a friend out of jail decreases from seven to five, each person must pay and additional $40. What is the cost of the bail?

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Question 474858: When the number of people who contribute equally to bail a friend out of jail decreases from seven to five, each person must pay and additional $40. What is the cost of the bail?
A) $200
B) $280
C) $560
D) $700
E) $880
Please explain how I could approach and solve this, thanks!
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = cost of bail.
Then x%2F5++-x%2F7+=+40
==> %282x%29%2F35+=+40
==> x = 700