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Ali saved 120% as much as Bala. Bala saved 1 1/4 as much as Charles. If Charles saved $120 less than Ali, find the average amount saved by the 2 boys.(help I have 8 hours before my nephews school start)

 Aug 5, 2015

Best Answer 

 #1
avatar+103061 
+5

120%   = 6/5

 

Call the amount save by Charles = A

 

The amount saved by Bala = (5/4)A

 

The amount saved by Ali = (6/5)(5/4)A =  (3/2)A

 

And we're told that

 

A + 120 = (3/2)A     subtract A from both sides

 

120 = (1/2)A    multiply both sides by 2

 

$240 = A  this is what Charles saved

 

And Baa saved (5/4)(240)  = $300

 

And Ali saved (3/2)A = $360

 

 

 Aug 5, 2015
 #1
avatar+103061 
+5
Best Answer

120%   = 6/5

 

Call the amount save by Charles = A

 

The amount saved by Bala = (5/4)A

 

The amount saved by Ali = (6/5)(5/4)A =  (3/2)A

 

And we're told that

 

A + 120 = (3/2)A     subtract A from both sides

 

120 = (1/2)A    multiply both sides by 2

 

$240 = A  this is what Charles saved

 

And Baa saved (5/4)(240)  = $300

 

And Ali saved (3/2)A = $360

 

 

CPhill Aug 5, 2015

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