Jenna works as a truck driver. She gets paid $0.40 cents per mile. If she drives 400 miles one way, how much does she get paid for a round trip?

First find the total number of miles Jenna drives: 400 miles/way * 2 ways = 800 miles

Then multiply that number by her pay per mile to find her total pay: 800 miles * $0.40/mile = $

<<800*0.4=320>>320 #### 320 Tim's car goes down in value by $1000 a year. He bought it for $20,000. How much is it worth after 6 years? It went down in value 1000*6=$<<1000*6=6000>>6000 So the car is worth 20000-6000=$<<20000-6000=14000>>14,000 #### 14000 Andy can get 50 demerits in a month before getting fired. If he got 2 demerits per instance for showing up late 6 times and 15 demerits for making an inappropriate joke, how many more demerits can he get this month before getting fired? First find how many demerits Andy got for showing up late: 2 demerits/time * 6 times = <<2*6=12>>12 demerits Then subtract the number of demerits he's gotten so far to find how many more he can get before getting fired: 50 demerits - 12 demerits - 15 demerits = <<50-12-15=23>>23 demerits #### 23 A group of 300 athletes spent Saturday night at Ultimate Fitness Camp. The next morning, for 4 hours straight, they left the camp at a rate of 28 athletes per hour. Over the next 7 hours, a new group of athletes trickled into the camp at a rate of 15 athletes per hour. Immediately thereafter, the camp gate was shut and everyone went to bed. What is the difference in the total number of athletes in the camp over the two nights? The number that left the camp on Saturday morning was 4*28 = <<4*28=112>>112 athletes This means that in the camp there remained 300-112 = <<300-112=188>>188 athletes. The new group trickling in on Sunday morning comprised 7*15 = <<7*15=105>>105 athletes The number that slept at the camp on Sunday night is therefore 188 + 105 = <<188+105=293>>293 athletes Since there were 300 athletes on Saturday night, the difference is 300 - 293 = <<300-293=7>>7 athletes. #### 7 A mother is making her own bubble mix out of dish soap and water for her two-year-old son. The recipe she is following calls for 3 tablespoons of soap for every 1 cup of water. If the container she hopes to store the bubble mix in can hold 40 ounces of liquid, and there are 8 ounces in a cup of water, how many tablespoons of soap should she add to the container (assuming that the soap itself doesn't count towards the capacity of the container)? The 40-ounce container can hold 40/8 = <<40/8=5>>5 cups of water. This means that 5*3 = <<5*3=15>>15 tablespoons of soap should be used, since each cup of water requires 3 tablespoons of soap. #### 15 A bird is building a nest from twigs. The bird has put twelve twigs together already to make a circle. For each twig it placed into the circle, it wants to weave in six more twigs to fill out the nest. It knows a tree that has dropped a third of the twigs it needs. How many twigs will the bird still need to find to finish its nest? The bird wants 12 * 6 = <<12*6=72>>72 twigs to add to the nest. It knows a tree that has dropped 72 * 1 / 3 = <<72*1/3=24>>24 twigs. Thus, the bird will still need 72 - 24 = <<72-24=48>>48 twigs to finish the nest. #### 48 Nellie had 380 legos, but she lost 57 of them and gave her sister 24 legos. How many legos does she have now? After losing 57 legos, Nellie has 380 - 57 = <<380-57=323>>323 legos. After giving her sister 24 legos Nellie has 323 - 24 = <<323-24=299>>299 legos #### 299 Betsy won 5 games of Monopoly. Helen won twice as many as Betsy and Susan won three times as many as Betsy. Between them, how many games have they won? Helen won twice as many games as Betsy's 5 so Helen won 2*5 = <<10=10>>10 games Susan won three times as many games as Betsy's 5 so Susan won 3*5 = <<3*5=15>>15 games When you combine their wins, together they won 5+10+15 = <<5+10+15=30>>30 games total #### 30 A psychiatrist has 4 patients that need 25 sessions in total. One of the patients needs 6 sessions. Another patient needs 5 more than that. How many sessions would the remaining patients need? The second patient needs 6+5 = <<6+5=11>>11 sessions. The first two patients need 6+11=<<6+11=17>>17 sessions total. 25-17=<<25-17=8>>8 sessions. #### 8 A crayon box has 24 crayons total. 8 crayons are red, 6 crayons are blue, there are 2/3 the number of green crayons as blue crayons, and the rest of the crayons are pink. How many crayons are pink? There are 2/3 green crayons * 6 blue crayons = <<2/3*6=4>>4 green crayons. The pink crayons left in the box are 24 crayons total - 8 red - 6 blue - 4 green = <<24-8-6-4=6>>6 pink crayons. #### 6