Noah, who loves his Grammy, calls her every week to talk about his day. If each call lasts 30 minutes and he is charged $0.05 per call minute, how much would he be billed if he makes the calls for a year?

A year has 52 weeks, so if he talks for 30 minutes every week, the total number of call hours is 52*30 =

<<52*30=1560>>1560 minutes. Since he is charged 0.05 cents per call, the total cost is 1560*.05 = <<1560*.05=78>>78 dollars #### 78 A giant spider is discovered. It weighs 2.5 times the previous largest spider, which weighed 6.4 ounces. Each of its legs has a cross-sectional area of .5 square inches. How much pressure in ounces per square inch does each leg undergo? The spider weighs 6.4*2.5=<<6.4*2.5=16>>16 ounces So each leg supports a weight of 16/8=<<16/8=2>>2 ounces That means each leg undergoes a pressure of 2/.5=<<2/.5=4>>4 ounces per square inch #### 4 Larry started off having 150 channels from his cable company. They took 20 channels away and replaced those with 12 channels. He called the company and asked if he could reduce his package by 10 more channels but add the sports package which is 8 channels. He realizes that he didn't add the supreme sports package. He calls back and that package adds 7 more channels. How many channels does Larry have? He started off with 150 channels and they took 20 away and added 12 so he has 150-20+12 = <<150-20+12=142>>142 channels He called and asked to reduce his 142 channels by 10 channels and added 8 sports channels so he now has 142-10+8 = <<142-10+8=140>>140 channels He ordered the wrong sports package and the new one adds an additional 7 channels for a total of 140+7 = <<140+7=147>>147 channels #### 147 Yuri has been adopting puppies for a month now. The first week he adopted 20 puppies, the second week 2/5 times as many puppies as the first week, the third week twice the number of puppies he adopted in the second week, and the fourth week ten more puppies than he adopted on the first week. How many puppies does Yuri have now? The number of adopted puppies in the second week is 2/5*20 puppies = <<2/5*20=8>>8 puppies In the third week, Yuri adopted 2 * 8 puppies = <<2*8=16>>16 puppies In the fourth week Yuri adopted ten more puppies than the third week, which totals 10 puppies + 20 puppies = <<10+20=30>>30 puppies. The total number of puppies in the four weeks is 30 puppies +16 puppies + 8 puppies + 20 puppies = <<30+16+8+20=74>>74 puppies #### 74 Thomas, Toby, and Rebecca worked a total of 157 hours in one week. Thomas worked x hours. Toby worked 10 hours less than twice what Thomas worked, and Rebecca worked 8 hours less than Toby. How many hours did Rebecca work? Toby: 2x-10 Rebecca: (2x-10)-8=2x-18 Total:2x-10+2x-18+x=157 5x-28=157 5x=185 x=<<37=37>>37 hours Rebecca:2(37)-18=56 hours #### 56 Sandro has six times as many daughters as sons. If he currently has three sons, how many children does he have? If Sandro has three sons, the total number of daughters, six times the number of sons, is 3 sons * 6 daughters/son = <<3*6=18>>18 daughters. The total number of children is 18 daughters + 3 sons = <<18+3=21>>21 children. #### 21 Mrs. Brown paid her utility bills with 3 $50 bills and 2 $10 bills. How much are her utility bills? Mrs. Brown's $50 bills amount to $50 x 3 = $<<50*3=150>>150. Her $10 bills amount to $10 x 2 = $<<10*2=20>>20. So Mrs. Brown's utility bills cost $150 + $20 = $<<150+20=170>>170. #### 170 Yesterday, Sarah collected 50 aluminum cans while Lara collected 30 more aluminum cans. Today, Sarah collected 40 while Lara collected 70 aluminum cans. How many fewer cans did they collect today than yesterday? Yesterday, Lara collected 50 + 30 = <<50+30=80>>80 aluminum cans. So Sarah and Lara collected a total of 50 + 80 = <<50+80=130>>130 aluminum cans yesterday. Today, Sarah and Lara collected a total of 40 + 70 = <<40+70=110>>110 aluminum cans. Thus, they collected 130 - 110 = <<130-110=20>>20 fewer aluminum cans today than yesterday. #### 20 Donna bought 3 times as many pencils as Marcia did. Marcia bought double the number of pencils as Cindi did. How many pencils did Donna and Marcia buy altogether if Cindi spent $30 on $0.50 pencils? Cindi bought 30/0.50 = <<30/0.50=60>>60 pencils. Marcia bought 2*60 = <<2*60=120>>120 pencils. Donna bought 3*120 = <<3*120=360>>360 pencils. Altogether, Donna and Marcia bought 120+360 = <<120+360=480>>480 pencils. #### 480 Charlie can make 5350 steps while running on a 3-kilometer running field. If he can run around the field 2 1/2 times during a running session, how many steps was he able to make? Charlie's steps for 3 kilometers is 5350 x 2 = <<5350*2=10700>>10700 steps were made when he run twice the field. Since he has run half of the field 5350 / 2 = <<5350/2=2675>>2675 steps were made when he runs half of the 3-kilometer field. Therefore, Charlie was able to make 10700 + 2675 = <<10700+2675=13375>>13375 steps for the 2 and a half run around the field. #### 13375