A taxi driver filled his car petrol tank with $$40$$ liters of petrol on Monday. The next day, he filled the tank with $$50$$ liters of petrol. If the petrol costs $$44$$ Rs. per liter, how much did he spend in all on petrol?
Step 1: Given Information
(1) Liters of petrol filled on Monday $$=40$$ liters
(2) Liters of petrol filled on Next day $$=50$$ liters
(3) Cost of petrol per liter $$=44$$ Rs.
Step 2: To find
(1) Total money spent on petrol
Step 2: Total money calculation
Total quantity filled on both the days $$=(40+50)=90$$ liters
Therefore,
Total money spent $$=$$ Total quantity $$\times$$ per liter cost of petrol $$=90\times 44=$$ $$3960$$ Rs.