+80 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?
+118667 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.
+191 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
