Tara's parents gave her $90 for her birthday. Not wanting to spend it, Tara put the money in a new bank account that gains 10% interest annually. If she doesn't withdraw the money at all, how much will she have after a year?

In one year, Tara's account will yield an interest of 10/100*90 =

<<10/100*90=9>>9 dollars The total in her account will therefore be 90 + 9 = <<90+9=99>>99 dollars. #### 99 Jackson spends 9 hours playing video games and 1/3 that much time studying. If Jackson's grade starts at 0 points and increases by 15 points for every hour he spends studying, what is his grade? First find how many hours he spends studying by dividing the number of hours spent gaming by 3: 9 hours / 3 = <<9/3=3>>3 hours. Then multiply that quantity by the point increase per hour to find Jackson's grade: 3 hours * 15 points/hour = <<3*15=45>>45 points. #### 45 Jill makes scented candles as a hobby. Her favorite scents are lavender, coconut, and almond, and she uses the same amount of each scent for every candle. This time, she made twice as many lavender candles as coconut candles, along with a batch of almond candles. She ran out of almond scent after making ten candles. If she had one and a half times as much coconut scent as almond scent and used all her coconut scent up too, how many lavender candles did she make? Jill made one and a half times as many coconut candles as almond candles, so she made 10 * 1 1/2 = 15 coconut candles. She made twice as many lavender candles as coconut candles, so she made 2 * 15 = <<2*15=30>>30 lavender candles. #### 30 Trisha needed to buy some groceries for herself and her dog. She spent $17 on meat, $22 on chicken, $43 on all the veggies, $5 on the eggs, and finally $45 on her dog’s food. When she left the store, she had only $35 left. How much money did she bring with her at the beginning? The total amount of money she spent is $17 + $22 + $43 + $5 + $45 = $<<17+22+43+5+45=132>>132 Add this to the amount she had left over to find the amount of money she brought at the beginning: $132 + $35 = $<<132+35=167>>167 #### 167 Milena is 7 years old, and her grandmother is 9 times older than her. Milena's grandfather is two years older than her grandmother. What is the age difference between Milena and her grandfather? Milena's grandmother is 7 * 9 = <<7*9=63>>63 years old. Her grandfather is 63 + 2 = <<63+2=65>>65 years old. So the age difference between Milena and her grandfather is 65 - 7 = <<65-7=58>>58 years. #### 58 Mr. Banks and Ms. Elizabeth are entrepreneurs who invest in different income streams and earn revenue from the investments. From each of his eight investments, Mr. Banks received $500 in revenue. Ms. Elizabeth also received $900 from each of her 5 investment streams. How much more money did Ms. Elizabeth make from her investments than Mr. Banks? Since Mr. Banks had 8 investment streams and each brought in a revenue of $500, he earned 500*8 = $<<500*8=4000>>4000 from all of his investments. Ms Elizabeth also received $900*5 = $<<900*5=4500>>4500 in revenue from her 5 income streams, The total amount of money that Ms. Elizabeth made more than Mr. Banks is $4500-$4000 = $<<4500-4000=500>>500 #### 500 John decides to buy a month's supply of dog treats. He gives his dog 2 treats a day and they cost $.1 each. How much does he spend on the treats if the month is 30 days long? He gives his dog 2*30=<<2*30=60>>60 treats for the month So that means it cost 60*.1=$<<60*.1=6>>6 #### 6 Wanda walks her daughter .5 miles to school in the morning and then walks .5 miles home. She repeats this when she meets her daughter after school in the afternoon. They walk to school 5 days a week. How many miles does Wanda walk after 4 weeks? She walks .5 miles to school and back 4 times a day so that's .5*4 = <<.5*4=2>>2 miles She walks 2 miles a day for 5 days so that's 2*5 = <<2*5=10>>10 miles Over 4 weeks of walking 10 miles per week she walks 4*10 = <<4*10=40>>40 miles #### 40 For every 12 cans you recycle, you receive $0.50, and for every 5 kilograms of newspapers, you receive $1.50. If your family collected 144 cans and 20 kilograms of newspapers, how much money would you receive? There are 144/12 = <<144/12=12>>12 sets of 12 cans that the family collected. So, the family would receive $0.50 x 12 = $<<0.50*12=6>>6 for the cans. There are 20/5 = <<20/5=4>>4 sets of 5 kilograms of newspapers that the family collected. So, the family would receive $1.50 x 4 = $<<1.50*4=6>>6 for the newspapers. Therefore, the family would receive a total of $6 + $6 = $<<6+6=12>>12. #### 12 Uncle Lou was given four bags of peanuts to eat on his 2-hour plane flight. Each bag contains 30 peanuts. If he eats all of the peanuts during the flight, one at a time, consumed at equally spaced intervals, what is the length of time, in minutes, between eating each peanut? Four bags of peanuts, with 30 peanuts per bag, is a total of 4*30=<<4*30=120>>120 peanuts. Two hours is 60*2=<<2*60=120>>120 minutes. Thus, consuming 120 peanuts, 1 at a time, at equally spaced intervals over two hours requires 120/120=<<120/120=1>>1 minute intervals between peanuts. #### 1