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erastovalidia [21]
4 years ago
15

A bag contains purple marbles and green marbles, 71 in total. The number of purple

Mathematics
1 answer:
Vinvika [58]4 years ago
8 0

Answer:

55 \: purple \: marbles

Step-by-step explanation:

Let  \: x,  y  \: be \:  the \:  number  \: of \:  purple \:  and \:  green  \: marbles  \: respectively \\ We \:  have \:  a \:  system \:  of  \: equation: \\  \begin{cases}x + y = 71 \\ x + 9 = 4y \end{cases}\Leftrightarrow \begin{cases}x  = 55\\ y = 16 \end{cases}

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Jon’s weekly salary was $1500. Find his new salary if he earned a 6% raise.
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3 years ago
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