30 percent *40 = (30/100)*40 = (30*40)/100 = 1200/100 = 12 Now we have: 30 percent of 40 = 12 Question: What is 30 percent of 40? We need to determine 30% of 40 now and the procedure explaining it as such Step 1: In the given case Output Value is 40. Step 2: Let us consider the unknown value as x. Step 3: Consider the output value of 40 = 100%. Step 4: In the Same way, x = 30%. Step 5: On dividing the pair of simple equations we got the equation as under 40 = 100% (1). x = 30% (2). (40%)/(x%) = 100/30 Step 6: Reciprocal of both the sides results in the following equation x%/40% = 30/100 Step 7: Simplifying the above obtained equation further will tell what is 30% of 40 x = 12% Therefore, 30% of 40 is 12
Minus Percentage Calculator
Using this 'Subtract a Percentage Calculator' you can easily subtract and add percentages as well as see the step-by-step solution. This tool answers questions like:
To subtract a percentage (%) from a number, you can use this formula:
Step 1Replace the inicial value (40) and the percentage to subtract (30) in the formula: Inicial Value = 40, Percentage = 30 Final Value = 40 - (30/100 × 40) Step 2Divide the percentage (30) by 100 to get the percentage in decimal form. You can do this by just moving the decimal point 2 places to the left: Final Value = 40 - (0.3 × 40) Step 3Multiply the percentage in decimal form (0.3) by the inicial value (40): Final Value = 40 - 12 Step 4Subtract the result above (12) from the inicial value (40) to get the final value: Final Value = 28 (Answer).
Above, we have a grafical representation using strip diagrams (or percent bars) of 40 minus x percent, where x ranges from 0 to 100%, for your reference. |