Question 1000030: 1.A system of linear equations is solved by substitution and results in the equation 0 = 0. This means that the equation has NO solution.
TRUE OR FALSE
2.A set of twenty-five coins, whose value is P113, consists of 1-peso coins, 5-peso coins and 10-peso coins. If the 1-peso coins were 5-peso coins, the 5-peso coins were 10-peso coins,and the 10-peso coins were 1-peso coins, the total value is also P113. How many 1-peso coins are in the set?
Answer by ikleyn(52855)   (Show Source):
You can put this solution on YOUR website!
1. The answer is FALSE.
2. Let x = the number of 1-peso coins,
y = the number of 5-peso coins, and
z = the number of 10-peso coins.
Then you have the system of 3 equations with 3 unknowns
x + y + z = 25
x + 5y + 10z = 113,
5x + 10y + z = 113.
Could you solve this system yourself?
--------------------------------------------------------------------
Comment from student: X=13,Y=4 AND Z=8 DID I GET IT RIGHT :) ?
--------------------------------------------------------------------
Response: Absolutely right. Good job!
|
|
|
