andrea spent $165.74 at the mall. she bought a CD for $16.59. she bought a sweater for $63.99. blue jeans were on sale for $21.29, so she bought several pairs. how many pairs of blue jeans did andrea buy?
A) 5 B) 6 C) 3 D) 4
2006-11-10 00:21:34 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
she had with her $165.74
she spent $16.59+$63.99
bakance she had=$165.74-(16.59+63.99)
no of jeans she bought @ $21.29
=165.74-(16.59+63.99)/21.29
=4
2006-11-10 00:27:16 · answer #1 · answered by raj 7 · 0⤊ 0⤋
Solution:
Total purchase : $165.74
CD price : $16.59
Sweater price : $ 63.99
X : Number of pairs of blue jeans
21.29X : Cost for X pairs of blue jeans
We have to solve this equation:
21.29X +16.59 + 63.99 = 165.74
21.29X + 80.58 = 165.74
21.29X = 165.74 - 80.58
21.29X = 85.16
21.29X/21.29 = 85.16/21.29
X = 4
Verification
21.29(4) + 16.59 + 63.99 = 165.74
85.16 +80.58 = 165.74
165.74 = 165.74
Answer : 4 => '' D ''
2006-11-10 19:15:39 · answer #2 · answered by frank 7 · 0⤊ 0⤋
Money left to buy jeans = $165.74 - (16.59+63.99)
=$ 85.16
Jeans bought = 85.16/21.29 = 4
i.e D
2006-11-10 08:35:01 · answer #3 · answered by grandpa 4 · 0⤊ 0⤋
Let no. of pairs of jeans = x
16.59 + 63.99 + x(21.29) = 165.74
80.58 + 21.29x = 165.74
21.29x = 85.16
x = 4
2006-11-10 08:51:25 · answer #4 · answered by Anonymous · 0⤊ 0⤋
165.74= 16.59 + 63.99+ X* 21.29
85.16 = X * 21.29
x= 4
2006-11-10 08:24:51 · answer #5 · answered by dragongml 3 · 0⤊ 0⤋
Let
16.59 = Price of CD
63.99 = Price of Sweater
- - - - --
80.58 = Cost of CD and sweater
165.74 - 80.59 = 85.16
21.29 x 4 = 85.16
Andrea Purchased four ( 4 ) blue jeans
- - - - - - s-
2006-11-10 10:12:33 · answer #6 · answered by SAMUEL D 7 · 0⤊ 0⤋
165,74-16,59-63,99=21,29x
21,29x=85,16
x=4
Letter D is correct
2006-11-10 08:51:59 · answer #7 · answered by Luiz S 7 · 0⤊ 0⤋