The cost of some grocery items is given in the following table. Find the total cost of each item.
| Item | Weight | Cost of 1 kg | Total cost |
|---|---|---|---|
| Rice | 12 kg 500 g | ₹60 | |
| Flour | 7 kg 250 g | ₹40 | |
| Sugar | 5 kg | ₹45 | |
| Chana dal | 3 kg 600 g | ₹70 | |
| Besan | 4 kg | ₹60 | |
| Jaggery | 1 kg 400 g | ₹50 |
Chana dal: 3 kg 600 g at ₹70 per kg
Given: Weight of chana dal = 3 kg 600 g Cost per kg = ₹70
Formula: Total Cost = Weight (in kg) × Cost per kg
Conversion: 3 kg 600 g = 3.6 kg
Substitution: Total Cost = 3.6 × ₹70
Calculation: Total Cost = ₹252
Alternative Method: Cost for 3 kg = 3 × ₹70 = ₹210 Cost for 600 g = 0.6 kg × ₹70 = ₹42 Total Cost = ₹210 + ₹42 = ₹252
Answer: The total cost of chana dal is ₹252.
Explanation
The chapter explains multiplication with weights. Weight of chana dal = 3 kg 600 g = 3.6 kg. Cost per kg = ₹70. Total cost = 3.6 × ₹70 = ₹252. Alternatively: 3 kg at ₹70/kg = ₹210, and 600 g = 0.6 kg at ₹70/kg = ₹42. Total = ₹210 + ₹42 = ₹252.
Solution Steps
Step 1: Convert weight to kg: 3 kg 600 g = 3.6 kg
Step 2: Calculate cost: 3.6 × ₹70 = ₹252