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Rama09 [41]
3 years ago
11

Mario has received 16 unlabeled thumb-drives with ads on them. he has 8 gray drives which have the print ad, 4 pink drives which

have the digital display ad, and 4 blue drives with the video ad. what is the minimum number of thumb-drives he must open to ensure that he has one of each color with each ad?*
Mathematics
1 answer:
harkovskaia [24]3 years ago
4 0
Mario has 8 gray drives which have the print ad, 4 pink drives which have the digital display ad, and 4 blue drives with the video ad.
<span>
</span><span>The most unsuccessfull way of opening drives is: 1st - grey, 2nd - grey, 3 - rd grey and so on untill all 8 gray drives are opened, then 9th - pink, 10th - pink, 11th - pink, 12th - pink  (or 4 blue) and then blue one (or pink one) drive.
</span><span>
</span><span>He must open 13 drives to ensure that he has one of each color with each ad. </span>
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<h2>-  \frac{2}{5}  \div  \frac{3}{4}</h2><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>

<h2>-  \frac{2}{5}  \times  \frac{4}{3}</h2><h3>■Multiply the fractions</h3>

<h2>-  \frac{8}{15}</h2>

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<h3>b) 0.4 \div  ( - 0.75)</h3><h3>■Convert the decimals into a fractions</h3>

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<h2>-  \frac{2}{5}  \div  \frac{3}{4}</h2><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>

<h2>-  \frac{2}{5}  \times  \frac{4}{3}</h2><h3>■Multiply the fractions</h3>

<h2>-  \frac{8}{15}</h2><h3>Hence, Quotient is -  \frac{8}{15}</h3>

<h3>c)-  \frac{2}{5}  \div  \frac{3}{4}</h3><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>

<h2>-  \frac{2}{5}  \times  \frac{4}{3}</h2><h3>■Multiply the fractions</h3>

<h2>-  \frac{8}{15}</h2><h3>Hence, The Quotient is -  \frac{8}{15}</h3>
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2 years ago
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