Read the following case study and answer the question :
Ramu is very hungry since he did not have breakfast in the morning. By 1.00 P.M., he became restless and started walking on the road in search of a hotel for snacks or meals.
After walking for 2kms, he could find a hotel where roti and dal was available for ₹ 10. Since he had only ₹ 15 in pocket, he paid ₹ 10 and had a satisfying meal. After taking a meal, he felt that he had regained energy.