Percent change twice Quiz
10 questions · easy to harder · Foundations · score and step-by-step answers
How it works
- 10 questions, about 20 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 5 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. No calculator: work it out on paper.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
A $50 shirt goes up 20%, then down 20%. What is the new price?- A) $480
- B) $48
- C) $10
- D) $50
2 Question 2
A $100 bag goes down 10%, then up 10%. What is the new price?Type the answer.
3 Question 3
A $40 game goes up 50%, then down 50%. What is the new price?- A) $40
- B) $300
- C) $10
- D) $30
4 Question 4
A $300 phone goes down 20%, then down 10%. What is the new price?Type the answer.
5 Question 5
A $500 TV goes up 10%, then down 10%. What is the new price?- A) $10
- B) $500
- C) $495
- D) $4950
6 Question 6
A $250 bike goes up 20%, then down 10%. What is the new price?Type the answer.
7 Question 7
A $50 shirt goes up 20%, then down 20%. What is the total percent change?- A) 5% less
- B) 6% less
- C) 10% less
- D) 4% less
8 Question 8
A stock is worth $60. It goes up 50%, then down 50%. What is it worth now?Type the answer.
9 Question 9
A farm has 600 sheep. The number grows 20%, then drops 25%. How many sheep are there now?- A) 540
- B) 10
- C) 570
- D) 5400
10 Question 10
A $500 TV goes up 10%, then down 10%. What is the total percent change?Type the answer.