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Omni-MATH / Violet has one-half of the money she needs to buy her mother a necklace. After…

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problem

Violet has one-half of the money she needs to buy her mother a necklace. After her sister gives her $30\$30, she has three-quarters of the amount she needs. How much will Violet's father give her?
Plain-text mathematical notation (without MathML)
Violet has one-half of the money she needs to buy her mother a necklace. After her sister gives her $30, she has three-quarters of the amount she needs. How much will Violet's father give her?
Original LaTeX notation
Violet has one-half of the money she needs to buy her mother a necklace. After her sister gives her $\$30$, she has three-quarters of the amount she needs. How much will Violet's father give her?

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