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Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.

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#### Solution

4x − 6y

6x + 2y

–x + 4y

–2x + y

7x + y

∴ Total saving = ₹(7x + y)

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