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 Rs. 44 per liter, how much did he spend in all on petrol?

Given that

Petrol filled on Monday = 40 liters
Petrol filled on next day = 50 liters

Cost of 1 liter petrol = Rs. 44

Find out

We have to find out how much amount did he spend in all on petrol

Solution

Total petrol filled = 90 liters
Cost of 1 liter petrol = Rs. 44
Cost of 90 liters petrol = 44 x 90
= 44 x (100 – 10)
= 44 x 100 – 44 x10
= 4400 – 440
= Rs. 3960

Answer
Therefore, he spent Rs. 3960 on petrol.

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