Question

Q3. A) If 7 kg sugar cost Rs. 115.50. What is the cost of 12 kg sugar?


B) A farmer has enough food to feed 20 animals in his cattle for

6 days. How long would the feed last if there were 10 more

animals in his cattle?


answer correctly​

Answer 1

Answer:

Given that the farmer has enough food to feed 20 animals in his cattle for 6 days. Let the number of days food can be fed be X. Now the farmer is having enough food to feed 20 animals for a period of 6 days. Later the farmer added 10 more animals to the cattle.

How long would the food last if there were 10 more animals in his cattle? For more number of animals, the food will last less number of days. ∴ It is a case of inverse variation. Therefore, the food will now last for 4 days.

Answer 2

Step-by-step explanation:

A) If 7 kg sugar cost ₹115.50

Then , cost of 12kg sugar is =₹115.50×12 = ₹1836

:. Cost of 12 kg sugar is ₹ 1836

B) Let the number of days food can be fed be X.

Now the farmer is having enough food to feed 20 animals for a period of 6 days.

Later the farmer added 10 more animals to the cattle. Now, the total number of animals in the cattle are 30.