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Alex gave 40% of his salary to his parents. He spent 50% of it and saved the remaining $200. How much did he give to his parents?(help me)

 Aug 2, 2015

Best Answer 

 #1
avatar+14538 
+10

Hello MaiaMitchell,

 

Alex' salary =  x

 

40% of x = 0.4 x     =>    to his parents

 

he spend  50% of x =  0.5 x

 

x-0.4x-0.5x=200       =>    0.1x = 200      =>    x= 2000

 

The salary  =  2000    [ $ ]

 

To his parents  2000*40% = 800     [ $ ]

 

Alex spend  2000* 50% = 1000    [ $ ]

 

I hope this is right!

 

Gruß radix !

 Aug 2, 2015
 #1
avatar+14538 
+10
Best Answer

Hello MaiaMitchell,

 

Alex' salary =  x

 

40% of x = 0.4 x     =>    to his parents

 

he spend  50% of x =  0.5 x

 

x-0.4x-0.5x=200       =>    0.1x = 200      =>    x= 2000

 

The salary  =  2000    [ $ ]

 

To his parents  2000*40% = 800     [ $ ]

 

Alex spend  2000* 50% = 1000    [ $ ]

 

I hope this is right!

 

Gruß radix !

radix Aug 2, 2015
 #2
avatar
+5

100%-40%-50%=10%

10%->$200

100%->$200×10=$2000

Ans: $2000

 Aug 2, 2015

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