Question

A hotel requires 700 kgs of rice for a week. How many tonnes of rice will it require for 100 days?

• A. 5
• B. 10
• C. 15
• D. 20

Hint:

In problems involving different units, it's often best to perform all calculations in the base unit (like kgs and days) and then convert to the required final unit (tonnes) only at the very end. This helps avoid confusion and potential errors with decimals during intermediate steps.

Answer 1

The Correct Option is B

Step 1: Understanding the Problem
We are given the consumption of rice for a week and need to calculate the consumption for 100 days in tonnes.

Step 2: Key Formula or Approach
\begin{enumerate}
Find the daily consumption of rice.
Calculate the total consumption for 100 days.
Convert the final amount from kgs to tonnes. \end{enumerate} We know that 1 week = 7 days and 1 tonne = 1000 kgs.

Step 3: Detailed Explanation
1. Find the daily consumption:
Consumption per week = 700 kgs.
\[ \text{Daily Consumption} = \frac{700 \text{ kgs}}{7 \text{ days}} = 100 \text{ kgs/day} \] 2. Calculate consumption for 100 days:
\[ \text{Total Consumption for 100 days} = \text{Daily Consumption} \times 100 \text{ days} \] \[ \text{Total Consumption} = 100 \text{ kgs/day} \times 100 \text{ days} = 10000 \text{ kgs} \] 3. Convert kgs to tonnes:
Since 1000 kgs = 1 tonne, we divide the total kgs by 1000.
\[ \text{Total Tonnes} = \frac{10000 \text{ kgs}}{1000 \text{ kgs/tonne}} = 10 \text{ tonnes} \]
Step 4: Final Answer
The hotel will require 10 tonnes of rice for 100 days. Therefore, option (B) is the correct answer.