Question

Sara brought a total of 8 nails at ace hardware . she purchased both 6 penny nails and 10 penny nails . she brought 2 more 6 penny nails then she did 10 penny nails . she had a total of 8 mails. How many 6 penny and 10 penny nails did sara purchase

Answer 1

if there are x 6d nails, and y 10d nails, then you have been told that

x+y = 8
x = y+2

Answer 2

x = # of 6-penny-nails
y = # of 10-penny-nails

x + y = 8
x = y + 2

Answer is five 6-penny-nails
and three 10-penny nails.