Loisa wants to buy a tablet that costs $450 cash. Since she does not have enough money, the store offered her an installment plan for 12 months. She will pay $100 as a down payment and pay $40 for the first 4 months; then $35 for the next four months; then $30 for the last four months. How much will Loisa save if she will buy the tablet in cash instead of on installment?

Loisa will pay a total of $40 x 4 = $

<<40*4=160>>160 for the first 4 months. She will pay a total of $35 x 4 = $<<35*4=140>>140 for the next four months. And she will pay a total of $30 x 4 = $<<30*4=120>>120 for the last four months. Thus, she will pay a total of $100 + $160 + $140 + $120 = $<<100+160+140+120=520>>520 for 12 months including the down payment. Therefore, Loisa can save $520 - $450 = $<<520-450=70>>70 if she buys the tablet in cash. #### 70 Eliana walked 200 steps for her morning exercise, did some press-ups, then added some 300 more steps to her count for the first day. The next day, she walked twice the number of steps she walked on the first day. And on the third day, Eliana walked an additional 100 steps. What's the total number of steps Eliana walked during these three days? On the first day, she walks 200 + 300 = <<200+300=500>>500 steps. The next day she walks twice the steps, which is 2*500 = <<2*500=1000>>1000 The total number of steps after the two days are 1000+500 = <<1000+500=1500>>1500 On the third day, she walks an additional 100 steps, bringing the three-day total to 1500+100=<<1500+100=1600>>1600 steps #### 1600 After evaluating his students on the final exams. Professor Oscar reviews all 10 questions on each exam. How many questions must he review if he has 5 classes with 35 students each? For each class, he has to review the questions of 35 students, in total, he will review 10 * 35 = <<10*35=350>>350 questions. For the 5 classes, he will review a total of 350 * 5 = <<350*5=1750>>1750 questions. #### 1750 Every ten minutes during sunset, the sky changes to a new color. How many colors did the sky turn over the two hours of a long summer sunset if each hour is sixty minutes long? At 60 minutes per hour, the sunset was 2 * 60 = <<2*60=120>>120 minutes long. The sky changes color every 10 minutes, so it turned 120 / 10 = <<120/10=12>>12 colors over the summer sunset. #### 12 Jaymee is 2 years older than twice the age of Shara. If Shara is 10 years old, how old is Jaymee? Twice the age of Shara is 10 x 2 = <<10*2=20>>20. So, Jaymee is 20 + 2 = <<20+2=22>>22 years old. #### 22 Blinky wants to make a three-layer birthday cake for her mom. The recipe for the smallest layer of the cake requires 2 cups of sugar. If the second layer is twice as big as the first and the third layer is three times larger than the second, how many total cups of sugar will she need for the third layer? Since the second layer is twice as big as the first, then it requires 2* 2 = <<2*2=4>>4 cups of sugar. Since the third layer is three times bigger than the second, then it requires 4 * 3 = <<3*4=12>>12 cups of sugar. #### 12 The distance from Anthony’s apartment to work is 10 miles. How far away is the gym from his apartment if it is 2 miles more than half the distance from his apartment to work? Half the distance from his apartment to work is 10 miles / 2 = <<10/2=5>>5 miles The gym is 2 more miles than this distance so is 2 + 5 = <<2+5=7>>7 miles away from his apartment #### 7 There are 21 cherry tomatoes on the tomato plant. 2 birds eat one-third of the tomatoes. How many are still left on the tomato plant? The birds eat this many tomatoes: 21 / 3 = <<21/3=7>>7 tomatoes. There are this many tomatoes left on the plant: 21 - 7 = <<21-7=14>>14 tomatoes. #### 14 A school does a yearly tree planting activity. This year, the 4th graders planted a total of 30 trees while 5th graders planted twice as many. The 6th graders planted 30 fewer than thrice the number of trees planted by the 5th graders. How many trees did they plant altogether? The 5th graders planted 30 x 2 = <<30*2=60>>60 trees. Thrice the number of trees planted by the 5th graders is 60 x 3 = <<60*3=180>>180. So, the 6th graders planted 180 - 30 = <<180-30=150>>150 trees. Therefore, they planted a total of 30 + 60 + 150 = <<30+60+150=240>>240 trees. #### 240 James decides to sell 80% of his toys. He bought them for $20 each and sells them for $30 each. If he had 200 toys how much more money did he have compared to before he bought them? He bought all the toys for 20*200=$<<20*200=4000>>4000 He sold 200*.8=<<200*.8=160>>160 toys He made 160*30=$<<160*30=4800>>4800 from selling them So he profits 4800-4000=$<<4800-4000=800>>800 profit #### 800