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marin [14]
3 years ago
13

Wuts the answer to this problem

Mathematics
1 answer:
Mazyrski [523]3 years ago
8 0

Answer:

Jane is 14 \frac{3}{10}

Step-by-step explanation:

The age of each person increases by a fractional amount.  In order to find Jane's age, you will need to start with Ari's age and then add the additional fractional amounts.  In order to add with fractions, the denominators must be the same.  In the case of Glen, you can figure his age out first:

12 \frac{4}{5} + 1 \frac{1}{6}

5 and 6 have a common denominator of 30, so multiply the numerator and denominator by the same factor and than add:

12 \frac{4}{5} = 12 \frac{24}{30} + 1\frac{1}{6} or 1 \frac{5}{30}= 13 \frac{29}{30}

Taking Glen's age and adding the additional amount for Jane:

13 \frac{29}{30} + 1 \frac{1}{3} or 1 \frac{10}{30}=14 \frac{3}{10}

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Answer: It will about 1.88 hours or 1 hour 52.5 minutes to clean the stadium if they work together .

Step-by-step explanation:

Given : Time taken by Kevin to clean a stadium = 5 hours

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Time taken by Chris to clean a stadium  = 3 hours

Rate of work done by Chris =\dfrac{1}{3}

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According to the question , we have

Rate of work done together = Rate of work done by Kelvin+Rate of work done by Chris

\dfrac{1}{t}=\dfrac{1}{5}+\dfrac{1}{3}\\\\ \Rightarrow\ \dfrac{1}{t}=\dfrac{3+5}{15}\\\\ \Rightarrow\ \dfrac{1}{t}=\dfrac{8}{15}\\\\\Rightarrow\ t=\dfrac{15}{8} =1.875

t=1+0.875 hours

t=1\text{ hour }+0.875(60)\text{ minutes}  [∵ 1 hour = 60 minutes]

t=1\text{ hour }+52.5\text{ minutes}= \text{1 hour 52.5 minutes}

Hence, It will about 1.88 hours or 1 hour 52.5 minutes to clean the stadium if they work together .

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