Question

PLEASE ANSWER MY QUESTION I WILL GIVE MARK AS BRAINLIEST WHO ANSWER MY QUESTION CORRECTLY​

Answer 1

$\large\underline{\sf{Solution-}}$

Given that,

• Selling price of cow milk = Rs 50 per litre

• Selling price of buffalo milk = Rs 60 per litre

• Selling price of goat milk = Rs 70 per litre

Quantity of cow milk sold = x litre

As it is given that quantity of buffalo milk sold is equals to the square of cow milk quantity.

So, Quantity of buffalo milk sold = x²

Quantity of goat milk sold = 10 litres.

Thus, we have

• Quantity of cow milk sold = x litre

• Quantity of buffalo milk sold = x²

• Quantity of goat milk sold = 10 litres.

(i) Total cost of quantity sold

$\rm \: = \: 50 \times x + 60 \times {x}^{2} + 70 \times 10$

$\rm \: = \: 50x + {60x}^{2} + 700$

can be re-arranged as

$\rm \: = \: {60x}^{2} + 50x + 700$

So, option (b) is correct.

(ii) Total quantity of milk sold

$\rm \: = \: x + {x}^{2} + 10$

$\rm \: = \: {x}^{2} + x + 10$

So, option (c) is correct.

(iii) The degree of equation of total cost of quantity is 2.

So, option (b) is correct.

(iv) Rajeev sells 10 litre of cow milk in a day. it means x = 10

So, total cost is ( put x = 10 in (i) part )

$\rm \: = \: 50(10) + {60(10)}^{2} + 700$

$\rm \: = \: 500 + 6000 + 700$

$\rm \: = \: 7200$

So, option (b) is correct.

(v) If Rajeev sell 25 litre of buffalo milk in a day.

As Quantity of buffalo milk sold = 25

$\rm\implies \: {x}^{2} = 25$

$\rm\implies \: x = 5$

So, Total quantity of milk sold is ( put x = 5 in (ii) part )

$\rm \: = \: {5}^{2} + 5 + 10$

$\rm \: = \: 25 + 15$

$\rm \: = \: 40$

So, option (d) is correct.