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 a decimal number.

Answer 1

Here is your answer mate:

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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..

hope this helps you☺️✌️

Answer 2

It is given the total number of pictures it can take = capacity of camera = 72

Javed take 48 pictures

Let us first find how many pictures are left in the roll of the film

Number of pictures left = capacity of camera - pictures taken by Javed

= 72 - 48 = 24

total part left in the roll of the film = number of pics left / capacity of camera

24 / 72

Let us reduce this fraction .

we can see 24 and 72 both have a common factor as 24

we reduce 24 and 72 by a factor of 24

1/ 3

Let us now find it as a decimal value : divide 1 by 3 we get 0.333

Answer : Rational number 1/3 , decimal number 0.333