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Question

# Rohan’s mother gave him ₹ 3 x y2 and his father gave him ₹5(x y2 + 2). Out of the total amount, he spent ₹(10−3xy2) on his birthday party. How much money is left with him?

A
xy2
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B
x2y
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C
11xy2
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D
xy
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Solution

## The correct option is C 11xy2Amount Rohan’s mother gave him =Rs.3xy2 Amount given by his father =Rs.5(xy2+2) Total amount given to him =₹3xyy2+5(xyy2 + 2) =₹.[3xy2+5(xy2+2)] =₹.[3xy2+5xy2+10] =₹.[8xy2+10] Amount spent by him =₹(10–3xy2) Amount left with him =₹(8xy2+10)−Rs.(10−3xy2) =₹(8xy2+10−10+3x2y) =₹(11xy2) Hence, the amount left with him ₹(11xy2).

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