Percent Change Challenge

Froggy Jumps

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Test your percent-change skills

Jared Peters

United States

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Percent Change Challenge


Froggy Jumps Percent Change ChallengeVersion en ligne Test your percent-change skills par Jared Peters 1 What is the standard formula for percent change? a (new−old)/new×100 b (old−new)/old×100 c ((new−old)/old)×100 2 If price changes from 50 to 60, what is the percent change? a 20% b 10% c −20% 3 If a value goes from 120 to 108, the percent change is: a −12% b −10% c −8% 4 What is percent decrease? a (old−new)/new ×100 b (new−old)/old ×100 c (old−new)/old ×100 5 A population grows from 2000 to 2500. Percent change is: a 20% b 25% c −25% 6 Why is percent change undefined when old = 0? a Old value must be positive b Division by zero is undefined c New must be nonnegative 7 Percent change vs percentage points: which is relative vs absolute difference? a Both are absolute b Percent change is relative; percentage points are absolute c Both are relative 8 If 100 becomes 90, the percent change is: a 10% b −90% c −10% 9 If 45 increases to 54, percent change is: a 20% b +18% c −20% 10 Which statement is true about percent change? a Always zero-sum b It can be positive or negative c Only increases are possible