Question

60% of a sum of money is $120.00. calculate 40% of tha same sum of money​

Answer 1

If 60% is $120, then by diving both the percent and the balance by 3, we se that 20% is $40.

Now multiply the 20% and $40 by 2, and you see 40% is $80.

Answer 2

In word (story) problems, the word "of" usually means multiply.

 

We may write 60% or 60/100 or 0.60 as needed   (similar for 40%).

 

Let x = the sum of money

 

Translate:

 "60% of a sum money is $120"    means

    (60/100)*x             =  $120

 

math:

    (60/100)*x = $120

         x = $200              [multiply both sides by (100/60)]

 

Translate again:

 "Calculate 40%of the same sum of money"   means

             (40/100)*($200)

              $80- ANSWER

I like (60/100) and (40/100), you might want to do again using 0.60 and 0.40.