Marcia needs to add 3 skirts, 2 pairs of pants and 5 blouses to her work wardrobe. A department store is offering a sale on pants; buy 1 pair get 1 pair 1/2 off. If her skirts are $20.00 each, the blouses are $15.00 and both pairs of pants are $30.00 each. How much will she spend on her wardrobe?
Let's think: The pants are $30.00 and are buy one get one 1 / 2 off so the second pair will be 30 * .5 = $15.00. The first pair of pants is $30.00 and the second pair is $15.00 so the pants cost 30 + 15 = $45.00. The skirts are $20.00 each and she’s buying 3 so that’s 20 * 3 = $60.00. The blouses are $15.00 each and she’s buying 5 so that’s 15 * 5 = $75.00. All total, her wardrobe will cost $45 for the pants, $60 for the skirts and $75 for the blouses so 45 + 60 + 75 = $180.00.. The answer is: 180.

The ratio of cows to bulls in a barn is 10:27. If there are 555 cattle on the farm, how many bulls are on the farm?
Let's think: The total ratio of cattle on the farm is 10 + 27 = 37. Since the fraction that represents bulls from the total ratio is 27 / 37, the number of bulls on the farm is 27 / 37 * 555 = 405.. The answer is: 405.

Jon runs a website where he gets paid for every person who visits. He gets paid $0.10 for every person who visits. Each hour he gets 50 visits. His website operates 24 hours a day. How many dollars does he make in a 30 day month?
Let's think: He makes 50 * $.10 = $5 per hour. So he makes $5 * 24 = $120 per day. So he makes $120 * 30 = $3600 a month.. The answer is: 3600.

Hadley loves to do volunteer work at the local library. On a certain day, she neatly arranges 100 books on the shelf. By lunchtime, a certain number of books had been borrowed. She added 40 more books to the same shelf. By evening, 30 more books had been borrowed. If the shelf had 60 books remaining by the evening, how many books had been borrowed by lunchtime?
Let's think:
Let x be the number of books borrowed by lunchtime. So by lunchtime, the remaining number of books will be 100 - x. After adding 40 more books, the total number of books increased to 100 - x + 40. By evening, after 30 more books have been borrowed, the total number of books remaining is 100 - x + 40 - 30 = 60. Thus 110 - x = 60. Thus x = 50 books.. The answer is: 50.