The amount of water that must be added to 51 litres of milk at 2 litres for 120 so as to have mixture worth ₹45 litre is :
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 17 litres
Price of Pure Milk = $\frac{120}{2}=60$ per litre
Let amount of water added be x litre
Total volume = $(51+x)L$
$⇒\frac{51×60}{51+x}=45$
$5060=45(51+x)$
$⇒x=\frac{765}{45}=17$