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Sasha spent 1/4 of her money on 18 pins and 4 keychains. The cost of 1 keychain is thrice as much as the cost of 1 pin. She bought some more keychains as much as the cost of 1 pin. She bought some more keychains with 1/2 of her remaking money. How many keychains did Sasha buy in all?

 Aug 18, 2021
 #1
avatar+114536 
0

Please show us what you have done so far.

 Aug 18, 2021
 #2
avatar+81 
0

I haven't done anything so far. Because it's so hard

DoctorOcopisMonOct  Aug 18, 2021
 #3
avatar+114536 
+2

I have not done this question but this is how I would start.

 

Let the cost of a pin be p cents

Let the cost of a keychain by k cents

Let the entire amount of her money be  M cents

 

Now start setting up true equations.

See if you can do something with that.

 Aug 19, 2021
 #4
avatar+76 
-4

I would set total money as X to start.

 

1/4X = 18p + 4k

k = 3p

 Comes out of first two sentence.

Now sub in k or p and work with the remaining problem. It should be easy now

 Aug 19, 2021

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