Need math help with: How many pins did she have left?

Mathematics
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 Rosa had 21 hair clips more than pins. She gave away 13 pins and had 48 hair clips and pins left sltogether. How many pins did she have left?

Dec 22nd, 2015

Thank you for the opportunity to help you with your question!

let number of clips be c and number of pin be p, then we have 

c-p= 21

c+p = 48+13 =61

add the two equations, we have 

2c = 21+61 = 82

c = 41

p = c-21 = 20 


Please let me know if you need any clarification. I'm always happy to answer your questions.
Dec 22nd, 2015

I want to thank you so much for helping me.  I like math but I don't like word problems.   I freeze.

Dec 22nd, 2015

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