Refer to Mrs. Paul's sales for the month of August to calculate the following: 1.4.1 Mrs. Paul adds a 40% mark-up to all the stock that she buys to make a profit. Calculate what her mark-up amount was in August on the cost price of th goods. ​

No cost price is given hence its not possible to calculate the actual answer.But don't worry I will simplify the equation till end that you can get the answer in fractions of sec

Solution:-

Let the Cost price be x

Mark up percent=40%

Now

Mark up=

Just multiply The CP by 0.04 to get the answer

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents