- A₹31,500
- B₹39,160
- C₹30,240
- D₹31,540
Show answer
Concept: Total area = sum of the two rectangles; check the discount condition.
- Area = m².
- , so 10% discount applies.
- Cost = ₹31,500.
Trick: Take 7 common: m² in one step.
Answer: (A) ₹31,500
अवधारणा: कुल क्षेत्रफल = दोनों आयतों का योग; फिर छूट की शर्त देखें।
- क्षेत्रफल = m²
- , अतः 10% छूट।
- लागत = ₹31,500
ट्रिक: 7 सामान्य लें: m²
उत्तर: (A) ₹31,500
