a taxi driver filled his patrol tank with 40 litres of patrol on one day and 45 liters of patrol is Rupes 54 per liter, find the amount spent on patrol in this two day.
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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
Therefore, he spent Rs. 3960 on petrol
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