Question

Peter’s dog, Fido drinks 1 packet of milk every morning. If the cost of a packet of milk is Rs. 18, then what is the cost of milk that Fido drank in the month of June?
a)Rs. 340
b)Rs. 450
c)Rs. 540
d)Rs. 630

Answer 1

Hint: To solve the question, we have to calculate the number of days in June, the cost of one packet of milk and the number of packets of milk Fido drink in a day. The product of the above obtained values is equal to the total cost of milk Fido drank in the month of June.

Complete step-by-step answer:
Given that Peter's dog Fido drinks one packet of milk every morning.
We know that the number of days in the month of June are 30 days.
We know that the total number of packets Fido drink in the month of June is equal to the product of the number of packets Fido drink every day and number of days in the month of June
\[\begin{align}
  & =1\times 30 \\
 & =30 \\
\end{align}\]
The given cost of one packet of milk is equal to Rs. 18
We know that the total cost of milk Fido drank in the month of June is equal to the product of number of packets every morning and number of days in the month of June and the cost of one packet of milk
\[\begin{align}
  & =30\times 18 \\
 & =540 \\
\end{align}\]
Thus, the cost of milk Fido drank in the month of June = Rs. 540
Hence, option(c) is the right choice.

Note: The possibility of mistake can be not analysing the given information to calculate the total cost of milk Fido drank in the month of June depends on number of days in month June, the cost of one packet of milk and number of packets of milk Fido drinks in a day.