Question

5. A farmer has enough food to feed 30 animals at his farm for 4 days. How long the food will last if there were
10 more animals at his farm?​

Answer 1

Answer:

After 10 more animals he has, total number of animals will be 30+10=40. Therefore, 40 animals=120/40 days=3 days

Step-by-step explanation:

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Answer 2

Answer:

3 days

Step-By-Step Explanation:

If the number of animals increases, then it will take fewer days to last.

Then the two quantities are in inverse proportions.

Let the required number of days be p.

$\because x_1y_1 = x_2y_2$

Where,

$x_1 = 30, \: y_1 = 4, \: x_2 = 40$ and $y_2 = p$ (let)

=> 30 × 4 = 40 × p

=> p = 30 × 4/40

=> p = 3

Hence the required number of days = 3.