×100 Calculation: Let the initial price of petrol be ₹100 and consumption be 100 litres. Initial expenditure = Price × Consumption Let the reduced consumption be x litres. New expenditure = New Price × Reduced Consumption New expenditure =114% of Initial expenditure Initial expenditure =100×100=₹10,000 New price =100+50=₹150 per litre New expenditure =₹10,000×
114
100
=₹11,400 New expenditure = New Price × Reduced Consumption ⇒₹11,400=₹150×x ⇒x=
11400
150
=76 litres Percentage reduction in consumption: ⇒