40 is what percent of 50?

To find out what percent 40 is of 50, you can use the following formula:

**Formula:** (Part / Whole) × 100

**Step 1:** Divide 40 by 50.
40 ÷ 50 = 0.8

**Step 2:** Multiply the result by 100 to get the percentage.
0.8 × 100 = 80

**Answer:** 40 is 80% of 50.