Question

8. The product of two numbers is 13 1/2 . if one number is 4 3/5 , find the other.
13 If one number is 4. And the other.
9. The cost of 6 kg of dats is Rs. 214 1/2. Find the cost of 1 kg of dal
10. By what number should we multiply 6 2/3 to get 25 5/6 ?
11. The product of two numbers is 20 5/7 . If one of the number is 6 2/3 find the other .

12. By what number should 5 5/6 be multiplied to get 3 1/3 ?
13. If the cost of a notebook is Rs. 8 how many notebooks can be purchased for Rs.131 1/4 ?
14. A bucket contains 24 litres of water. How many3/4 liter jugs can be filled from the bucket to get it emptied?
15. Sugar is sold at Rs. 17 by 3/ 4 per kg. Find the cost of 8 1/2 kg of sugar.

16. Shikha has read of a book consisting of 288 pages. How many pages are still lett?
17. A rectangular park is 20 m long and 15 m wide. What is the area of the park?

18. A carton consisting of 40 boxes of nails and each box weight 3 kg. How much would
a carton of nails weight?
19. Find the area of a rectangular park which is 41 m long and 18 m broad.

20. The cost of 52 kg of sugar is Rs. 101., tind its cost per kg.
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Answer 1

20

Let’s assume the cost of 1 kg of sugar = Rs x

And, let the cost of 1 kg of rice = Rs y

Then according to the given conditions, we have

5x+7y=153      … (i) and

7x+5y=147      … (ii)

Multiplying (i) by 7 and (ii) by 5, we have

35x+49y=1071 … (iii)

35x+25y=735 … (iv)

Subtracting (iv) from (iii), we get

24y=336

⇒y=24336

⇒y=14

On substituting the value of y in (i), we get

5x+7(14)=153

⇒5x+98=153

⇒5x=153−98

⇒5x=55

⇒x=555=11

Hence,

The cost of 1 kg of sugar is Rs 11 and 

The cost of 1 kg of rice is Rs 14.

Now,

Cost of 6 kg of sugar = Rs 11×6= Rs 66

Cost of 10 kg of rice = Rs 14×10= Rs 140

Thus, the cost of 6 kg of sugar and 10 kg of rice = Rs 66+ Rs 140= Rs 206.

Answer 2

omg questions is quite big

friend can you ask small questions