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प्रश्न
Rohan’s mother gave him ₹ 3xy2 and his father gave him ₹ 5(xy2 + 2). Out of this total money he spent ₹ (10 – 3xy2) on his birthday party. How much money is left with him?
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उत्तर
Given, amount given to Rohan by his mother = ₹ 3xy2 and amount given to Rohan by his father = ₹ 5(xy2 + 2)
∴ Total amount Rohan have = [(3xy2) + (5xy2 + 10)]
= ₹ [3xy2 + 5xy2 + 10]
= ₹ (8xy2 + 10)
Total amount spent by Rohan = ₹ (10 – 3xy2)
∴ After spending, Rohan has left money.
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