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Alenkasestr [34]
4 years ago
12

25% of 72 is what number

Mathematics
2 answers:
dlinn [17]4 years ago
8 0

\lage\text{Hey there!}

\large\text{Side\ note}\downarrow\\\bullet\  \large\text{Of means \bf{multiply}}\large\text{ in mathematics terms}\\\bullet\ \large\text{Percentages (\%) \bf{runs out of 100}}

\mathsf{25\% \times72}\\\mathsf{0.25\times72}\\\mathsf{\dfrac{25}{100}\times72}

\mathsf{\dfrac{25}{100}\times75}\\\\\mathsf{\dfrac{25}{100}\times\dfrac{72}{1}}\\\\\mathsf{\dfrac{25}{10}=\dfrac{1}{4}}\\\\\mathsf{\dfrac{1\times72}{4\times1}}\\\\\mathsf{1\times72=72\leftarrow numerator\ (TOP\ number) }\\\mathsf{4\times1=4\leftarrow denominator \ (BOTTOM\ number)}\\\\\mathsf{\dfrac{72\div4}{4\div4}}\\\\\mathsf{72\div4=18\leftarrow numerator}\\\mathsf{4\div4=1\leftarrow denominator}\\\\\mathsf{\dfrac{18}{1}=18\div1=18}\\\\\boxed{\bf{Answer: \boxed{18}}}\checkmark

\large\text{Good luck on your assignment and enjoy your day!}

~\dag\dfrac{\frak{LoveYourselfFirst}}{:)}

morpeh [17]4 years ago
6 0

Answer:

18

Step-by-step explanation:

25% of 72

25% = 0.25

Multiply

0.25 * 72

18

Hope this helps :)

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En una empresa se realizan dos descuentos sucesivos : el primero del 30% y luego otro del 10% para la venta de sus artículos ¿ c
FromTheMoon [43]

If a company makes two discounts with one being made first and then another, the equivalent discount is 37%.

<h3>What was the equivalent discount?</h3>

Assume that the price of a good in the company was $10.

The initial discount of 30% takes the price to:

= 10 x ( 1  - 30%)

= $7

Then there is a 10% discount:

= 7 x (1 - 10%)

= $6.30

The equivalent discount is:

= (10 - 6.3) / 10

= 37%

Find out more on equivalent discount at brainly.com/question/843074.

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4 0
2 years ago
A master painter can paint 110 square yards of surface area with a roller in 1 hour, while his apprentice can paint 85 square fe
7nadin3 [17]

The apprentice needs 6.25 hours to complete the job using the brush

<h3><u>Solution:</u></h3>

Given, A master painter can paint 110 square yards of surface area with a roller in 1 hour

\text { Then, his rate of painting }=110 \text { yard }^{2}

We know that 1 yard = 3 feet

=110 \times(1 \text { yard })^{2}=110 \times(3 \text { feet })^{2}=110 \times 9 \text { feet }^{2}=990 \text { square feet. }

While his apprentice can paint 85 square feet of surface area per hour with a brush

Together they are painting a building with a surface area of 5100 square feet.

After painting for 4\frac{1}{4} hours , the master painter lets the apprentice Finish the job.  

Now, they worked for 4\frac{1}{4} hours  

Then, area painted = area painted by master + area painted by apprentice

\text { Area painted }=990 \text { square feet per hour } \times 4 \frac{1}{4} \text { hours }+85 \text { square feet per hour } \times 4 \frac{1}{4} \text { hours }

\text { Area painted }=990 \times \frac{4 \times 4+1}{4}+85 \times \frac{4 \times 4+1}{4}

\begin{array}{l}{\text { Area painted }=990 \times \frac{17}{4}+85 \times \frac{17}{4}=(990+85) \times \frac{17}{4}} \\\\ {\text { Area painted }=1075 \times \frac{17}{4}=4568.75 \text { square feet. }}\end{array}

Now, the remaining area to be painted = total area – painted area  

Area to be painted = 5100 – 4568.75 = 531.25

So, apprentice has to paint 531.25 square feet alone.

\text { Then, time required }=\frac{\text { area to be painted }}{\text { his rate of painting }}

=\frac{531.25}{85}=6.25

Hence, the apprentice needs 6.25 hours to complete the job

7 0
4 years ago
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