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Q: Read the table and fill in the boxes.

distance travelled by kriti in 1 hour is 3km 

distance travelled by karan in 4 hours is 16km 

distance travelled by kriti in 4 hours is 12km

 

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Posted by

sunthar

Check whether the given ratios are equal, i.e. they are in proportion.
If yes, then write them in the proper form.
1. 1 : 5 and 3 : 15
2. 2 : 9 and 18 : 81
3. 15 : 45 and 5 : 25
4. 4 : 12 and 9 : 27
5. ` 10 to ` 15 and 4 to 6

1. 1 : 5 and 3 : 15

\frac{3}{15}=\frac{3}{3\times5}=\frac{1}{5}

So the ratios are in proportion
2. 2 : 9 and 18 : 81

\frac{2}{9}=\frac{2\times9}{9\times9}=\frac{18}{81}

So So the ratios are in proportion
3. 15 : 45 and 5 : 25

\\\frac{15}{45}=\frac{1}{3}\\\frac{5}{25}=\frac{1}{5}

The given ratios are not equal, so they are not in proportion
4. 4 : 12 and 9 : 27

\\\frac{4}{12}=\frac{1}{3}\\\frac{9}{27}=\frac{1}{3}

The given ratios are equal, so they are in proportion
5. ` 10 to ` 15 and 4 to 6

\\\frac{10}{15}=\frac{2}{3}\\\frac{4}{6}=\frac{2}{3}

The given ratios are equal, so they are in proportion

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Posted by

Safeer PP

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Draw any rectangle and find the ratio of its length to its breadth.

Suppose a rectangle has length 10 cm and breadth of 7 cm then ratio of its length to its breadth=10:7

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Posted by

Safeer PP

Find the ratio of number of doors and the number of windows in your
classroom.

If there are four windows and one door then the ratio of the number of doors and the number of windows =1:4

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Posted by

Safeer PP

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Find the number of students above twelve years of age in your class. Then, find the ratio of the number of students with age above twelve years and the remaining students.

suppose there are 40 students in the class and 5 students are above 12 years, then there are 40-5=35 students below or equal to 12 years.

Then he ratio of the number of students with age above twelve years and the remaining students = 5:35=1:7

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Posted by

Safeer PP

Find the ratio of number of desks and chairs in your classroom.

If there are 8 desk and 32 chairs then the ratio of number of desks and chairs is 8:32=1:4

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Posted by

Safeer PP

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Find the ratio of number of notebooks to the number of books in your bag.

If there are 3 notebooks and 4 books in the bag then the  ratio of the number of notebooks to the number of books =3:4

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Posted by

Safeer PP

In a school, there were 73 holidays in one year. What is the ratio of the number of holidays
to the number of days in one year?

The correct answer is 

1 : 5

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Posted by

Denisha Kashyap

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Cost of a toffee is 50 paise and cost of a chocolate is rupees 10. Find the ratio of the cost of a toffee to the cost of a chocolate.

Cost of toffee = 50 paise

cost of chocolate =  10 rupees

1 rupee = 100 paise

Therefore, 10 rupees equal 1000 paise 

So, the cost of chocolate = 1000 paise 

the ratio of the cost of toffee to the cost of chocolate is 50:1000 = 1:20.

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Posted by

Safeer PP

Saurabh takes 15 minutes to reach school from his house and Sachin takes one hour to reach school
from his house. Find the ratio of the time taken by Saurabh to the time taken by Sachin.

Time taken by Saurabh = 15 minutes

Time taken by Sachin= 1 hour = 60 minutes.  To find ratios we have to convert the given quantities to the same units. Here we are expressing both the quantities in minutes

 the ratio of the time taken by Saurabh to the time taken by Sachin= 15:60=1:4

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Posted by

Safeer PP

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