Question

find all the answer ...... .

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Answer 1

Answer:

1) 38/7

2) 3 1/2 m

3) Perimeter=21 m Area=27 9/16 m^2

4)Rs.102 3/8

5) a.1 11/18 b.3/7

Step-by-step explanation:

1) Let the unknown number be'x'.

So, 11/7+x=7

11+7x/7=7

11+7x=7*7

11+7x=49

7x=49-11

7x=38

x=38/7

Therefore, the other number is 38/7

2)  Given:-

The length of the wire= 8 1/4 m= 33/4 m

Length of one piece when it is cut=4 3/4 m= 19/4 m

Let the length of the other piece be'x'

So, 19/4+x=33/4

x=33/4-19/4

x=14/4=7/2 m

Therefore, the length of the other piece is 7/2 m or 3 1/2 m (mixed fraction)

3) Perimeter of a square is 4*s

Here, side = 5 1/4 m=21/4 m

4*21/4=21

Therefore, the perimeter of the square field is 21 m.

Area of a square is s*s

That is, 21/4*21/4

441/16=27 9/16 (mixed fraction)

Therefore the area of the square field is 27 9/16 m^2

4)Given:-

Per kg Apples is sold at Rs.15 3/4

1 kg=> Rs.15 3/4

6 1/2 kg=> ?

Cross multiplication

6 1/2 * 15 3/4

13/2 * 63/4

819/8

Rs. 102 3/8 ( mixed fraction)

5) a.1/2 of 3 2/9

3 2/9=29/9

1/2 * 29/9

29/18

1 11/18 (mixed fraction)

b. 1/3 of 15/7

1/3 * 15/7

15/21

3/7