At the end of the 2 week, both Mary and Ardella has an equal amount of saving i.e. $140.
Mary and Ardella are saving money for a trip. Mary started her savings with $20 and is now saving $12 each week. Ardella started her savings with $40 and is now saving $10 each week. After how many weeks will Mary and Ardella have saved the same amount of money To determine,
In mathematics, it deals with numbers of operations according to the statements.
Let the number of weeks is x and total saving is y.
Now equation for Mary started her savings with $20 and is now saving $12 each week.
y = 12x +20 - - - (1)
The equation for Ardella, started her savings with $40 and is now saving $10 each week.
y = 10x + 40 - - - - (2)
Equating equation 1 and 2
12x +20 = 10x +40
12x -10x = 40 -20
2x = 20
x = 20/2
x = 10
Now put this x in equation 1
y = 12 * 10 + 20
y = 140
Thus, at the end of the 2 week both Mary and Ardella has an equal amount of saving i.e. $140.
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