SOLUTION: Martha wants to buy a digital camera from her three-month savings. To do this she needs to maintain an average saving of $300 in each month. She saves $450 in the first month and $

Algebra ->  Graphs -> SOLUTION: Martha wants to buy a digital camera from her three-month savings. To do this she needs to maintain an average saving of $300 in each month. She saves $450 in the first month and $      Log On


   

Question 142952: Martha wants to buy a digital camera from her three-month savings. To do this she needs to maintain an average saving of $300 in each month. She saves $450 in the first month and $200 in the second month. Find the amount she should save in the third month to buy a digital camera at the end of three months.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
450+200+X=3*300
650+X=900
X=900-650
X=250 AMOUNT TO BE SAVED IN THE LAST MONTH.
PROOF
450+200+250=900
900=900