The answer to 90% of 54 is 48.6
The distance would be 21. to find the difference, add the absolute values so 12+9, which equals 21
29 + 4 + ? = ?
29 × 2 = 58
58 + 4 = 62
62 + 29 = 91
? = 58
? = 91
29 + 4 + 58 = 91
$450/week
30.5 hours/week
450/30.5 = $14.75
The answer is A (14.75/hour).

btw, don't put the shirts in the same bundle as the socks, you may end up with an unwanted perfume.