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riadik2000 [5.3K]
3 years ago
13

Larry’s family made a donation to the library. His mom gave half as much as larry. His dad gave 5 times as much as Larry’s siste

r did. The sister gave $10 less than larry. Larry gave $15. How much did the family donate?
Mathematics
1 answer:
storchak [24]3 years ago
6 0

Answer:

The family donated $52.50

Step-by-step explanation:

Larry's mom donated $7.50 ($15 ÷ $2=$7.50)

Larry's dad donated $25.00 ($5 x $5=$25.00)

Larry's sister donated $5.00 ($15 - $10=$5.00)

Larry donated $15.00

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so we know that 24% of the students buy their lunch at the cafeteria, and 190 students brownbag.

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\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 190&76\\ x&24 \end{array}\implies \cfrac{190}{x}=\cfrac{76}{24}\implies 4560=76x \\\\\\ \cfrac{4560}{76}=x\implies 60=x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{total amount of students}}{190+60\implies 250}

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