SOLUTION: The cost of 21 chair and 15 tables is rupees 53700.the cost of seven chairs is rupees 3500 less than the cost of 5 tables.find the cost of a chair?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The cost of 21 chair and 15 tables is rupees 53700.the cost of seven chairs is rupees 3500 less than the cost of 5 tables.find the cost of a chair?      Log On


   

Question 924108: The cost of 21 chair and 15 tables is rupees 53700.the cost of seven chairs is rupees 3500 less than the cost of 5 tables.find the cost of a chair?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
7c = 5t - 3500
21c = +3%285t+-+3500%29
...
21c + 15t = 37500
3(5t-3500) + 15t = 37500
30t = 37500 + 10500
30t = 48,000
t = 1,600 and c = rupees 642.86 %288000-3500%29%2F7