What is the current dependency ratio?

What is the current dependency ratio?

Key Takeaways. The dependency ratio is the total number of people too young or old to work, divided by those 15–64 years of age. Dependency ratios reveal the population breakdown of a country and how well dependents can be taken care of.

How do you calculate ratios?

To calculate the ratio of an amount we divide the amount by the total number of parts in the ratio and then multiply this answer by the original ratio. We want to work out $20 shared in the ratio of 1:3. Step 1 is to work out the total number of parts in the ratio. 1 + 3 = 4, so the ratio 1:3 contains 4 parts in total

How do you calculate age ratio?

Find the ratio of their present ages. 10 years ago, age of mother was three times the age of her son. Say, the age of son was x and mother’s age was 3x. After ten years: Mother’s age will be (3x + 10) +10 and son’s age will be (x + 10) + 10.

What is John’s present age if after 10 years?

John’s father’s age will be twice Raman’s age after 10 years. F = 48-10 =38. J = 14 (F-2) = 14 (38-2) = 14 * 36 = 9 years. Therefore, John’s current age is 9 years.

What are number problems?

In number problems, you are given some clues about one or more numbers, and you use these clues to build an equation. Number problems don’t usually arise on an everyday basis, but they provide a good introduction to practicing the Problem-Solving Strategy.

How do you solve a story problem?

A proven step-by-step method for solving word problems is actually quite simple.

1. Read the problem out loud to yourself.
2. Draw a Picture.
3. Think “What do I need to find?”
4. List what is given.
5. Find the key words.
6. Solve.
7. Check your work.

What are the 4 steps in solving simple problems?

Polya created his famous four-step process for problem solving, which is used all over to aid people in problem solving:

1. Step 1: Understand the problem.
2. Step 2: Devise a plan (translate).
3. Step 3: Carry out the plan (solve).
4. Step 4: Look back (check and interpret).

What are the four step plan in problem solving?

This problem-solving plan consists of four steps: details, main idea, strategy, and how. As students work through each step, they may use “graphic representations” to organize their ideas, to provide evidence of their mathematical thinking, and to show their strategy for arriving at a solution.

What you should do first when given a word problem to solve?

The first step to solving a math word problem is to read the problem in its entirety to understand what you are being asked to solve. After you read it, you can decide the most relevant aspects of the problem that need to be solved and what aspects are not relevant to solving the problem.

What are the steps in solving world problems?

Problem-Solving Strategy

• Read the word problem. Make sure you understand all the words and ideas.
• Identify what you are looking for.
• Name what you are looking for.
• Translate into an equation.
• Solve the equation using good algebra techniques.
• Check the answer in the problem.
• Answer the question with a complete sentence.

Why are word problems difficult?

Word problems tend to be complicated in part because of their descriptive language. Students often don’t understand what exactly they’re being asked, especially when the problem includes abstract concepts

What is the 3 important things to remember in solving word?

Read: Read the problem and decide what the question is asking. Read the problem 2 times or more. Underline or circle key words, phrases, and numbers. Draw a line through irrelevant information.