Problem Solving: Test Your Knowledge

Problem Solving: Test Your Knowledge

Assessment

Interactive Video

Mathematics, Science

4th Grade - University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

This video presents a series of word problems in mathematics, covering topics such as mixtures, coin counting, work rates, age calculations, and geometry. Each problem is explained with a solution, encouraging viewers to pause and solve them independently.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You have two acid solutions of 20% and 70%. How many litres of each should you mix to get 10 litres of a 50% solution?

5 litres of 20% and 5 litres of 70%

3 litres of 20% and 7 litres of 70%

6 litres of 20% and 4 litres of 70%

4 litres of 20% and 6 litres of 70%

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you have 30 coins consisting of 10p and 20p coins, and their total value is £4.40, how many 10p coins do you have?

10

16

14

12

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two people can complete a task together in 6 hours. If one person can do it alone in 9 hours, how long would it take the second person to do it alone?

12 hours

15 hours

18 hours

21 hours

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sam is three times as old as Tom. In five years, Sam's age will be two more than twice Tom's age. How old is Tom now?

5 years

7 years

9 years

11 years

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The perimeter of a rectangle is 36 inches, and its length is 10 inches more than its width. What is the width of the rectangle?

10 inches

8 inches

6 inches

4 inches

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