Solve.
Jeans are on sale at the local department store for 30% off. If the jeans originally cost $57, find the sale price. (Round to the nearest cent.)
$55.29
$17.10
$39.90
$74.10
Problem 2
Substitute the given values into the formula and solve for the unknown variable.
d = rt; t = 8, d = 16
2
0.5
24
8
2007-08-09 07:09:36 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
30% off means that the sale price is 100% - 30% = 70% of the original price. 70% is the same as multiplying by 0.7. 0.7*$57 = $39.90.
d = rt; t = 8, d = 16
Substitute in the given values.
16 = r*8
Divide both sides by 8.
2 = r
2007-08-09 07:13:48 · answer #1 · answered by DavidK93 7 · 1⤊ 0⤋
1) 57*.3 = 17.10
57 - 17.10 = $39.90
2) d = rt
16 = r*8
r=2
2007-08-09 14:14:11 · answer #2 · answered by miggitymaggz 5 · 0⤊ 0⤋
Prob 1: 39.90
Prob 2: 2
2007-08-09 14:15:23 · answer #3 · answered by mimi 3 · 0⤊ 0⤋
39.90
2
This is just sad.
2007-08-09 14:13:45 · answer #4 · answered by Matt C 3 · 0⤊ 0⤋