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3 years ago

12

Dean purchased a new cell phone through Verizon. The phone cost him $210 but that was 40% off. How much did the phone cost origi

nally?

1 answer:

natta225 [31]3 years ago

4 0

The answer is 350 dollars Explanation 350-(350X0.4) is 210

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Inequality Form:

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Interval Notation:

(− ∞ , − 4 ) ∪ ( 1 ,∞ )

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4 years ago

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$\bold{\huge{\blue{\underline{ Solution }}}}$

$\bold{\underline{ Given :- }}$

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$\bold{\underline{ To \: Find :- }}$

<u>We </u><u>have </u><u>to </u><u>find </u><u>the </u><u>total </u><u>length </u><u>of </u><u>the </u><u>bamboo </u>

$\bold{\underline{ Let's \: Begin :- }}$

Let the total length of bamboo be x

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$\sf{\dfrac{ 1}{3}}{\sf{x +}}{\sf{\dfrac{ 1}{5}}}{\sf{x + 14 = x }}$

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$\sf{\dfrac{5x + 3x}{15}}{\sf{ = x - 14 }}$

$\sf{ 5x + 3x = 15( x - 14 )}$

$\sf{ 8x = 15x - 210 }$

$\sf{ 210 = 15x - 8x}$

$\sf{ 7x = 210 }$

$\sf{ x = }{\sf{\dfrac{ 210}{7}}}$

$\sf{\red{x = 30\: m}}$

Hence, The total length of the bamboo is 30m.

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4 years ago

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3 years ago

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