Work-rate Quiz
10 questions · easy to harder · Algebra 1 · 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. A calculator is on the screen.
- 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
Sam can mow a lawn in 6 hours. Leo can mow it in 30 hours. How many hours will it take them to mow it together?- A) x = 1
- B) x = 30
- C) x = 36
- D) x = 5
2 Question 2
Mia can clean a house in 4 hours. Zoe can clean it in 12 hours. How many hours will it take them to clean it together?Type the answer.
3 Question 3
Eva can weed a garden in 5 hours. Tom can weed it in 20 hours. How many hours will it take them to weed it together?- A) x = 1
- B) x = 4
- C) x = 20
- D) x = 25
4 Question 4
Omar can wash a car in 20 minutes. Ali can wash it in 30 minutes. How many minutes will it take them to wash it together?Type the answer.
5 Question 5
Leo can build a wall in 12 hours. Max can build it in 6 hours. How many hours will it take them to build it together?- A) x = 12
- B) x = 18
- C) x = 1
- D) x = 4
6 Question 6
Nadia can paint a room in 2 hours. Sara can paint it in 2 hours too. How many hours will it take them to paint it together?Type the answer.
7 Question 7
Jo can sort the mail in 40 minutes. Kim can sort it in 120 minutes. How many minutes will it take them to sort it together?- A) x = 160
- B) x = 1
- C) x = 30
- D) x = 120
8 Question 8
Ana can paint a fence in 4 hours. Ben can paint it in 6 hours. How many hours will it take them to paint it together?Type the answer.
9 Question 9
One pipe can fill a tank in 6 hours. Another pipe can fill it in 9 hours. How many hours will it take both pipes together?- A) x = 1
- B) x = 18
- C) x = 185
- D) x = 15
10 Question 10
Dan can mow a field in 10 hours. Raj can mow it in 15 hours. How many hours will it take them to mow it together?Type the answer.