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

We will find the total petrol in the tank.

Answer: The taxi driver spent Rs. 3960 on petrol.

Let's solve this step by step.

Explanation:

We will use the unitary method to answer this question.

Total petrol in tank = 40 L + 50 L = 90 L

Spendings on petrol = Rs. (44 × 90) = Rs. 3960

Therefore, the taxi driver spent Rs. 3960 on petrol.