How many kgs of wheat costing Tk 8 per kg must be mixed with 36 kg of rice costing Tk 5.4 per kg so that 20% gain may be obtained by selling the mixture at Tk 7.2 per kg?

• ক 10 kg
• খ 10.2 kg
• গ 10.5 kg
• ঘ 10.8 kg ✅ সঠিক উত্তর