Mr Khan earns £250 per week, but he gets a rise of 6%.
 A) The actual increase or decrease. 
 => 250 dollars + 6%
 => 6% / 100% = 0.06
 Now, to the formula to get the answer
 => 250 * .06 = 15 dollars is the total increased that he received.
 B) The new amount or quantity.
 => 250 dollars + 6%
 => 250 dollars + 15 dollars = 265 dollars is the new amount of his salary after the increased.