Question

The cost of 1 lit. milk is Rs.7.50, then cost of 30.5 lit. milk is
A.Rs.225.75
B.Rs.223.75
C.Rs.228.75
D.None

Answer 1

Hint: Use Proportion. As we know the price of 1 lit. of milk let the price and quantity both be the different variable. And net amount will be obtained by multiplication of both the quantities only.

Complete step-by-step answer:
Let no. of lit. be x and cost be y
Net amount \[ = x \times y\]
So here the cost of milk per liter is fixed and volume of milk is \[30.5{\text{ }}lit.\]
\[x = 30.5{\text{ }}lit.\] (total quantity given )
Net amount \[ = x \times y\]
\[ = \left( {30.5} \right) \times \left( {7.50} \right)\]
\[ = 228.75\]
Hence, option (c) is the correct answer.

Note: Use the various terms given in the question properly and let the unknown term in order to make calculation easier. Understand the question and grab the concept tried to explain in the question properly.