Gem bought some bracelets and necklaces for her friends. The price of each bracelet was $3.50 while the price of each necklace was $10.90. For every 7 necklaces bought, she was given one such bracelet for free. After receiving the free bracelets, the number of bracelets was
14 of the number of necklaces bought. If Gem paid a total of $2209.90, how much more did she pay for the necklaces than the bracelets?
Necklaces |
Bracelets |
4x7 |
1x7 |
Bought |
Free |
Bought |
7x4 |
1x4 |
|
28 u |
4 u |
3 u |
|
Necklaces |
Bracelets |
|
Bought |
Free |
Bought |
Number |
28 u |
4 u |
3 u |
Value |
$10.90 |
0 |
$3.50 |
Total value |
305.2 u |
0 |
10.5 u |
The number of necklaces bought is the repeated identity. Make the number of necklaces bought the same. LCM of 4 and 7 is 28.
Cost of the bought necklaces
= 28 u x 10.90
= 305.2 u
Cost of the bought bracelets
= 3 u x 3.50
= 10.5 u
Total cost of the bought items
= 305.2 u + 10.5 u
= 315.7 u
315.7 u = 2209.90
1 u = 2209.90 ÷ 315.70 = 7
Amount that she paid more for the necklaces than the bracelets
= 305.2 u - 10.5 u
= 294.7 u
= 294.7 x 7
= $2062.90
Answer(s): $2062.90