Arushi spends Rs. X daily and saves Rs. Y per week. How much money she saves in XY2 weeks?

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Answer:Given,

Amount spent by Aarushi in a day =Rs.x

Amount spent by Aarushi in a week =Rs.7x

Amount earned by Aarushi in a week =Rs.y.

Thus,

Amount saved by Aarushi in a week =Rs.y−7x

Amount saved by Aarushi in xy

2

weeks =Rs.(y−7x)xy

2

.