A farmer has 70 wheat grains. He gives 10 grains to each of his 5 workers, takes back 3 grains from each worker, and finally gives 15 grains to the village well. How many grains does the farmer have left?
Answer
20 grains
The correct answer is 20 grains — Final amount is 20 grains.
Step-by-step solution
- Start with 70 wheat grains.
- Give 10 grains to each of 5 workers → 10×5=50 grains given.
- Subtract 50 from 70 → 20 grains left.
- Take back 3 grains from each of 5 workers → 3×5=15 grains taken back.
- Add 15 to remaining grains → 35 grains left.
- Give 15 grains to the village well.
- Subtract 15 from 35 → 20 grains left.
- Final amount is 20 grains.
Common mistake: Miscalculating the number of grains given or taken back
Concept tested: Complex give and take with multiple operations
Published · How this solution was prepared and checked
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