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mihalych1998 [28]

3 years ago

13

jane takes 4 hours to do a job that Alice can do in 3 hours. if jane works 1/2 hour before Alice joins her, how long will it tak

e the two of them to finish the job

1 answer:

BlackZzzverrR [31]3 years ago

8 0

Answer:

2.4 hours

Step-by-step explanation:

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Step-by-step explanation:

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30 \div \frac{1}{3} 30÷ 3 1

ioda

Answer:

<h2>90</h2>

Step-by-step explanation:

$30 \div \frac{1}{3} \\\\\mathrm{Convert\:element\:to\:fraction}:\quad \:30=\frac{30}{1}\\=\frac{30}{1}\div \frac{1}{3}\\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}\\=\frac{30}{1}\times \frac{3}{1}\\\\\mathrm{Apply\:rule}\:\frac{a}{1}=a\\=30\times \:3\\\\=90$

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3 years ago

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Answer:

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Step-by-step explanation:

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Sedaia [141]

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