Question

9. Cost of 5kg of wheat is $30.50. What will be the cost of 8kg of the
wheat?
10. Calculate: 82% of 10.
11. If 20% of n is equal to 40, what is n?
12. If 100% of a number is 15, what is 50% of the number?
13. There are 100 chairs arranged for people to watch a band concert. If
92 chairs have people sitting in them during the concert, what
percentage of the chairs are filled?
14. Divide 20 pens between Sheela and Sangeetha in the ratio of 3:2. :
15. Write the ratio 18:45 in its simplest form.​

Answer 1

Ans 9 :

Cost of 5 kg of wheat = Rs.30.50

Cost of 1 kg of wheat = 30.50/5 = 3050/500

= Rs.6.10

Cost of 8 kg of wheat = 6.10 x 8 = Rs.48.80

Ans 10 :

82% of 10 = 8.2

Ans 11 :

20 n = 4000 which means that n = 200.

The price of a T-shirt was $20.

It was first increased by 20%.

Answer 2

Answer:

Cost of 5 kg of wheat = Rs.30.50  

Cost of 1 kg of wheat = 30.50/5 = 3050/500= Rs.6.10    

Cost of 8 kg of wheat = 6.10 x 8 = Rs.48.80

Step-by-step explanation:

82% of 10 = 8.2...

20 n = 4000 which means that n = 200.  

The price of a T-shirt was $20.  

It was first increased by 20%.