If the price of petrol increases by 25% and Kevin intends to spend only an additional 15% on petrol, by what percentage must he reduce the quantity of petrol purchased?
A. 6.67%
B. 12%
C. 10%
D. 8%
E. 14%

• Say cost of petrol is 100.
  New cost = 125.
  Now he spends only 115, so would get only 115/125 = 0.92 of the quantity.
  SO he should reduce his consumption by 8% .
• 11 years agoHelpfull: Yes(11) No(2)
• Option C.
  Let, the price of 1 litre petrol be Rs. x and Kelvin buy Y litres of petrol.
  
  so, Money spent=xy
  
  Now, New rate of Petrol =Rs 1.25x
  
  
  now, the money spent by kelvin= Rs. 1.15xy
  
  let,Now Kelvin buy q litres of petrol
  
  so, 1.25x * q =1.15xy
  => q =0.92y
  
  so, reduce in consumption = 8%
• 11 years agoHelpfull: Yes(3) No(1)
• assume petrol price=100rs and he spends 100rs for petrol
  25% increase --> 125rs
  but he spends additional 15% only --> 115 rs
  tat means reduce % = (115/125)*100 = 8%
• 7 years agoHelpfull: Yes(0) No(0)
• increase in price by 25%
  and amount to be spent more on petrol is 15% to be added as additional
  hence, answer is C.10%
• 4 years agoHelpfull: Yes(0) No(0)
• the answer is 8%.
• 4 years agoHelpfull: Yes(0) No(0)