$240 is saved by Isaiah from his allowance within the space of 20 weeks.
An equation is used to show the relationship between two or more variables. Equations may involve the use of mathematical operations.
Isaiah is saving $12 per week from his allowance
The amount of money saved by Isaiah in 20 weeks is:
Money saved = $12 per week * 20 weeks
Money saved = $240
Hence $240 is saved by Isaiah from his allowance within the space of 20 weeks.
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