You can solve **20 **percent of what number is **3** without using a calculator. Normally you just type on Google to get the answer. But in this tutorial, you will learn step by step how to find **20** percent of what number is **3**. Once you follow this guide, you will be able to solve similar problems easily.

If you are in a rush, **20** percent of **15** is **3**

**How to find 20 percent of what number is ****3**

Let’s assume our missing number is **z**. In this method, you will use **Z** to form an equation.

**Step 1:** Write the problem as an expression

**20% ****x Z = 3**

**Step 2:** We can also express the above equation as

**20**** /100 x Z = 3**

**Step 3:** Multiply both sides by 100 and divide both sides by **Z**

**20****/100 x 100/20 x Z = 3 x 100/20**

**Step 4:** Simplify the equation

** Z= 3 x 100/20**

Therefore: **20** percent of **15** is **3**

**How to find 20 percent of what number is 3 using a formula**

**Formula = Number x 100 /percent**

Replace the formula with your numbers and simplify to get the answer

**= 3 x 100/20**

Therefore: **20** percent of **15** is **3**

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