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A book dealer bought 100 books for $1250. If she sold 30% of these at $10 each and the rest at $15 each, what was her total profit?

 Jul 19, 2016

Best Answer 

 #1
avatar+9466 
+5

Total profit = 30% x 100 x 10 + (1-30%) x 100 x 15 - 1250

                  = 300 + 1050 - 1250

                  = $100 

30% of 100 books are sold for $10 : 30% x 100 x 10

The rest(100% - 30%) of 100 books are sold for $15 : (1-30%) x 100 x 15

 Jul 19, 2016
edited by MaxWong  Jul 19, 2016
 #1
avatar+9466 
+5
Best Answer

Total profit = 30% x 100 x 10 + (1-30%) x 100 x 15 - 1250

                  = 300 + 1050 - 1250

                  = $100 

30% of 100 books are sold for $10 : 30% x 100 x 10

The rest(100% - 30%) of 100 books are sold for $15 : (1-30%) x 100 x 15

MaxWong Jul 19, 2016
edited by MaxWong  Jul 19, 2016
 #2
avatar
+5

30 % of 100 books is     30 books   at 10 dollars each =  $300

70%  of 100 books is      70 books  at 15 dollars each =  $1050

 

Total sales = 300 + 1050 = $1350

Total cost   =                         1250

________________________________

Profit = 1350 - 1250        = $  100

 Jul 19, 2016
 #3
avatar+2 
0

Good job guest, for that table.

P.S. I am using an alt LOL

MaxWongAlt  Jul 19, 2016
 #4
avatar+42 
0

Her loss is $75 and her benefit is $175 so her total benefit is:

 

Profit-Loss = Pure Profit

$175-$75 = $100 laugh

 Jul 19, 2016

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