Question

4. Javed's camera is loaded with a new roll of film. The film can take
72 exposures. During the class picnic, he took 48 pictures. What part of
the film is left to be exposed? Express this as a rational number as well as
decimal number.
5. In a market, the cost of a packet of coffee is 7240. One shopkeeper advertises
coffee at off and another shopkeeper offers off. Which of the two is a
better buy? Why? What is the difference in the price at which they are sold?
6. The teacher asked the students to read as much as possible of a particular book during the weekend.
Balakrishnan read of the book. Angela read of the book and Subhalakshmi read of the
book. Arrange the three names in the order from the one who read the most to the least.
Calculate your reading speed! Reading books is fun and also makes you think about the world!
7. In a theatre, for a show, the audience were women and of these women were school girls. If
the total audience were 600 in number, how many were school girls?
8. Hema, Shefali, and Molly each drew two of these cards.
Shefali said, “The sum of my numbers is 1”.
2
Hema said, "The sum of my numbers is 1”.
Molly said, “The difference of my numbers is just less than one."​

Answer 1

Answer:

Answer no 1= 2472=13=0.333..

Answer 2=Rs24

Answer 3 =0.66  

Answer 4 =1.5

Step-by-step explanation:

Solution No 1:

The number of pictures , which can be taken by a film = 72

the number of pictures , he has taken = 48

the number of pictures , which are left = 72-48

= 24

therefore the portion of the film which is left to be exposed 

=2472=13=0.333..

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Solution No 2:

CP= Rs240

Shopkeeper(1)= 1/5×240= Rs48 off

= Rs240-48=Rs192

Shopkeeper(2)=1/10×240=Rs24 off

= Rs240-24=Rs216

Difference=Rs216-192

=Rs24 Ans.

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Solution No 3:

1/2= 0.5

5/6= 0.833

2/3= 0.66  

So in the order of the one who read the most from the book!

Angela, Subbulakshmi, Balakrishnan

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Solution No 4:

She has the sum of 1.5

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Hope my answers Helps you but If any mistake tell me ok My Math is not soo Good! :(

Ok !

Happy Learning!!!