A driver of auto rickshaw makes a profit of 20% on every trip when he carries 3 passengers and the price of petrol is Rs. 30 a litre. Find the % profit for the same journey if he goes for 4 passengers per trip and the price of petrol reduces to Rs. 24 litres?  Answers.
A) 40%. B) 60%. C) 80%. D) 100%. E) 120%.
20% of 30 = 6 rupee profit    36/3= 
<gadget id="calculator"> 36/3</gadget>
<output>12</output>
12 rupee per passenger     12*4= 
<gadget id="calculator">  12*4</gadget>
<output>48</output>
48   48 - 24= 
<gadget id="calculator">48 - 24</gadget>
<output>24</output>
24.   so profit= 100%.   ANSWER:100%.
<result>D</result>
A driver of auto rickshaw makes a profit of 20% on every trip when he carries 3 passengers and the price of petrol is Rs. 30 a litre. Find the % profit for the same journey if he goes for 4 passengers per trip and the price of petrol reduces to Rs. 24 litres?