The price of fuel decreases by 55%, 10% and 20%
The price of fuel decreases by 55%, 10% and 20% in three successive months, but increases by 65% in the fourth month. What is the percentage increase/decrease in the price of fuel in the fourth month as compared to its original price?
ईंधन की कीमत क्रमागत तीन महीनों में 55%, 10% और 20% कम की गई है, लेकिन चौथे महीने में 65% वृद्धि की गई है। चौथे महीने में ईंधन की कीमत में उसकी मूल कीमत की तुलना में कितने प्रतिशत की वृद्धि/कमी हुई है?
Detailed Solution & Logic
Decreases by 46.54%
Let original price = 100
After 55% decrease = $ 100 \times 0.45 = 45 $
After 10% decrease = $ 45 \times 0.9 = 40.5 $
After 20% decrease = $ 40.5 \times 0.8 = 32.4 $
After 65% increase = $ 32.4 \times 1.65 = 53.46 $
Net change = 100 - 53.46 = 46.54
Answer = 46.54% decrease
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