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Question 843646: (Can someone please help me with this question?)
A woman bought some large frames for $16 each and some small frames for $7 each at a closeout sale. If she bought 20 frames for $176, find how many of each type she bought?
She bought ___ large frames?
She bought ___ small frames?
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! A woman bought some large frames for $16 each and some small frames for $7 each at a closeout sale.
If she bought 20 frames for $176, find how many of each type she bought?
:
Let a = no. of large frames bought
let b = no. of small frames
:
Write one equation for the total no. of frames
Write another equation for total $amt spent
a + b = 20
b = (20-a), use this form for substitution
and
16a + 7b = 176
replace b with (20-a)
16a + 7(20-a) = 176
16a + 140 - 7a = 176
16a - 7a = 176 - 140
9a = 36
a = 36/9
a = 4 large frames bought
:
You can find no. of small frames, use the equation
b = 20-a
:
Check the solutions in the total amt spent equation
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