The price of a commodity originally sold for 20# increased to 35#.find the percentage increase

(35-20)/20 = 15/20 = 0.75 = 75%

To find the percentage increase, you can use the following formula:

Percentage Increase = (New Value - Original Value) / Original Value * 100

In this case, the original value is 20# and the new value is 35#.

Percentage Increase = (35# - 20#) / 20# * 100

Calculating this equation:

= (15# / 20#) * 100
= 0.75 * 100
= 75%

Therefore, the percentage increase in the price of the commodity is 75%.

To find the percentage increase, you need to calculate the difference between the final price and the original price, and then express it as a percentage of the original price. Here's how you can calculate it:

Step 1: Find the difference:
Difference = Final Price - Original Price

In this case:
Difference = 35# - 20#

Step 2: Calculate the percentage increase:
Percentage Increase = (Difference / Original Price) * 100

Substituting the values:
Percentage Increase = (Difference / 20#) * 100

Now, let's calculate the difference:
Difference = 35# - 20#
Difference = 15#

Substituting the difference value:
Percentage Increase = (15# / 20#) * 100
Percentage Increase = (0.75) * 100
Percentage Increase = 75%

Therefore, the percentage increase in the price of the commodity is 75%.