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Snowcat [4.5K]
3 years ago
6

A church rings its bells every 15 minutes, the school rings its bells every 20 minutes and the day care center rings its bells e

very 25 minutes. If they all ring their bells at noon on the same day, at what time will they next all ring their bells together
Mathematics
1 answer:
ankoles [38]3 years ago
7 0

Answer:

As few as just over 345 minutes (23×15) or as many as just under 375 minutes (25×15).

Imagine a simpler problem: the bell has rung just two times since Ms. Johnson went into her office. How long has Ms. Johnson been in her office? It could be almost as short as just 15 minutes (1×15), if Ms. Johnson went into her office just before the bell rang the first time, and the bell has just rung again for the second time.

Or it could be almost as long as 45 minutes (3×15), if Ms. Johnson went into her office just after the bells rang, and then 15 minutes later the bells rang for the first time, and then 15 minutes after that the bells rang for the second time, and now it’s been 15 minutes after that.

So if the bells have run two times since Ms. Johnson went into her office, she could have been there between 15 minutes and 45 minutes. The same logic applies to the case where the bells have rung 24 times—it could have been any duration between 345 and 375 minutes since the moment we started paying attention to the bells!

Step-by-step explanation:

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In a school of 145 students, each was asked to choose one or more activities from sport, music and drama.76 students choosr spor
GrogVix [38]

Answer:

100 students chose all three

Step-by-step explanation:

first make a row for each subject and put how many students chose said subject. then subtract the number of students that chose both from the total amount of a subject

hope this helped

4 0
3 years ago
To mix the color “autumn purple,” a painter mixes 28 parts of blue to 48 parts of red. What is the ratio of blue to red? Express
kupik [55]

Answer:

blue : red

7      : 12

Step-by-step explanation:

blue : red

28      48

Divide each by 4

28/4   48/4

7         12


blue : red

7      : 12

7 0
3 years ago
Read 2 more answers
Plz ans with steps... Thx!!
Ganezh [65]

Answer:

16

Step-by-step explanation:

Let the 1st part of your answer be x , so the 2nd part will be 40-x . From the given information, we can write the equation: (1/4)x = (3/8) × (40-x) . We can simplify this into (1/4)x = (120-3x)/8 ; 8x = 480-12x ; 8x+12x = 480 ; 20x = 480 ; x = 480/20; x = 24

Therefore, the 1st part = 24

Plug this into your 40-x equation to get: 40 - 24 = 16

3 0
3 years ago
What is the answer ti 3\4 × g = 5/8
gladu [14]

For this case we have the following expression:

\frac {3} {4} g = \frac {5} {8}

We clear the value of the variable "g", for this:

We multiply by 4 on both sides of the equation:

4 * \frac {3} {4} g = \frac {5} {8} * 4\\3g = \frac {20} {8}

We divide by 3 on both sides of the equation:

\frac {3g} {3} = \frac {20} {8 * 3}\\g = \frac {20} {24}

We simplify:

g = \frac {10} {12} = \frac {5} {6}

Answer:

g = \frac {5} {6}

4 0
3 years ago
Set up the equation to find the AREA of the SMALL rectangle with a length of (x) and width (x+7)
Igoryamba

<u>Answer:</u>

<h3>( x ) x ( x + 7 ) </h3>

<u>Step-by-step explanation:</u>

To find the area of a rectangle, we have to multiply the length with the width.

In the question, the given length is 'x' and the width given is 'x +7'

So, the area would be

( x ) x ( x + 7 )

The area = x^{2} + 7x

So, the equation to find the area of such a rectangle would be:-

( x ) x ( x + 7 )

7 0
3 years ago
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