Which statements about percent increase and decrease are true? Select all that apply.
A 20% decrease uses multiplier 0.20.
A 20% increase uses multiplier 1.20.✓پاسخ درست
Adding 20 to any starting value gives a 20% increase.
Subtracting 20% of the starting value gives the same result as multiplying by 0.80.✓پاسخ درست
توضیح
A 20% increase retains the whole and adds 20%, so its multiplier is 1.20. A 20% decrease leaves 80%, making subtraction of 20% of the start equivalent to multiplication by 0.80; using 0.20 alone gives only the removed part.