Question

DURING THE FIRST MONTH , THE PRICE OF FUEL INCRESED BY 20 % . DURING THE NEXT MONTH, IT DECREASED BY 10 %. WHAT WAS THE PERCENTAGE INCREASE OR DECREASE IN THE PRICE OF FUEL OVER THE TWO MONTH TIME PERIOD

Answer 1

in the first month, the price of fuel incresed=20%

in the next month, it decreases =10%

X'=20-10=10

X'=10