Last year Dallas was 3 times the age of his sister Darcy. Darcy is twice as old as Dexter who is 8 right now. How old is Dallas now?

Darcy = 2*Dexter = 2*8 = 16

Last year Darcy was 16 - 1 =

<<16-1=15>>15 Dallas was 3 times Darcy last year = 3*15 = <<3*15=45>>45 Dallas is a year older now = 45 + 1 = <<45+1=46>>46 Dallas is 46 years old now. #### 46 In a section of the forest, there are 100 weasels and 50 rabbits. Three foxes invade this region and hunt the rodents. Each fox catches an average of 4 weasels and 2 rabbits per week. How many rabbits and weasels will be left after 3 weeks? 3 foxes catch 4 weasels each every week for a total of 3*4 = <<3*4=12>>12 weasels 12 weasels are caught every week for 3 weeks for a total of 12*3 = <<12*3=36>>36 weasels 3 foxes catch 2 rabbits each every week for a total of 3*2 = <<3*2=6>>6 rabbits 6 rabbits are caught every week for 3 weeks for a total of 6*3 = <<6*3=18>>18 rabbits There were originally 100 weasels so now there are 100-36 = <<100-36=64>>64 weasels left There were originally 50 rabbits so now there are 50-18 = <<50-18=32>>32 rabbits left There are 64+32 = <<64+32=96>>96 weasels and rabbits left #### 96 Apple sold 100 iPhones at their New York store today for an average cost of $1000. They also sold 20 iPads for an average cost of $900 and 80 Apple TVs for an average cost of $200. What was the average cost across all products sold today? The sales for iPhones were 100 iPhones * $1000 per iPhone on average = $<<100*1000=100000>>100,000 The sales for iPads today were 20 iPads * $900 per iPad = $<<20*900=18000>>18,000 The sales for Apple TV’s today were 80 * $200 = $<<80*200=16000>>16,000 The total sales for Apple at their New York store today was $100,000 + $18,000 + $16,000 = $<<100000+18000+16000=134000>>134,000 The total number of products sold was 100 + 20 + 80 = <<100+20+80=200>>200 The average cost per product sold was $134,000 total sales / 200 total products = $<<134000/200=670>>670 #### 670 Melody planted sunflowers from two different seed packets. She found that the sunflowers from Packet A were 20% taller than the sunflowers from Packet B. If the sunflowers from Packet A were 192 inches tall, how tall were the sunflowers from Packet B? The height of the sunflowers from Packet A is the same as the height of the sunflowers from Packet B + 20%. If Y represents the height of the sunflowers from Packet B, Y + 0.20Y = the height of sunflowers from Packet A. We know the height of the sunflowers from Packet A is 192 inches = Y + 0.20Y or 1.2Y. To figure out Y, we would divide both sides of the equation by 1.2, like this: 192 / 1.2 = 1.2Y / 1.2 or 160 = Y. #### 160 Mr. Grey is purchasing gifts for his family. So far he has purchased 3 polo shirts for $26 each; 2 necklaces for $83 each; and 1 computer game for $90. Since Mr. Grey purchased all those using his credit card, he received a $12 rebate. What is the total cost of the gifts after the rebate? Mr. Grey paid $26/shirt x 3 shirts = $<<26*3=78>>78 on polo shirts. He paid $83/necklace x 2 necklaces = $<<83*2=166>>166 on necklaces. So, he paid $78 + $166 + $90 = $<<78+166+90=334>>334 for the gifts. After the rebate, the total cost of the gifts is now $334 - $12 = $<<334-12=322>>322. #### 322 Mary bought 5 boxes of drinks at $6 each box and 10 boxes of pizzas at $14 each box for her pizza party. She paid $200 for all the items. How much change did she get back? Mary spent 5 x $6 = $<<5*6=30>>30 on drinks. She spent 10 x $14 = $<<10*14=140>>140 on pizzas. She spent a total amount of $30 + $140 = $<<30+140=170>>170. Therefore, Mary got a change of $200 - $170 = $<<200-170=30>>30 after paying all the items for her pizza party. #### 30 Herbert is 10 years younger than Kris. If Kris is 24 years old now, how old will Herbert be next year? Herbert is 24 - 10 = <<24-10=14>>14 years old now. Thus, Herbert will be 14 + 1 = <<14+1=15>>15 years old next year. #### 15 There are 16 people at a dinner party. There are 40 dinner rolls available for them. Half the people eat 1 1/2 rolls each. The other half eat 1/2 a roll each. How many dinner rolls are leftover? Half the people at the party is 16 / 2 = <<16/2=8>>8 people. 8 people at the party eat 1 1/2 rolls each, 8 x 1 1/2 = 12 dinner rolls eaten. 8 people at the party eat 1/2 a roll each, 8 x 1/2 = <<8*1/2=4>>4 dinner rolls eaten. Combined, the people at the party ate 12 + 4 = <<12+4=16>>16 dinner rolls. There were originally 40 dinner rolls - 16 that got eaten = <<40-16=24>>24 dinner rolls leftover. #### 24 Rosie runs 6 miles per hour. She runs for 1 hour on Monday, 30 minutes on Tuesday, 1 hour on Wednesday, and 20 minutes on Thursday. If she wants to run 20 miles for the week, how many minutes should she run on Friday? On Monday and Wednesday, Rosie runs 6*1= <<6*1=6>>6 miles. On Tuesday, Rosie runs 6*(30 minutes/60 minutes) = <<6*(30/60)=3>>3 miles. On Thursday, Rosie runs 6*(20 minutes/60 minutes)=<<6*(20/60)=2>>2 miles. So far this week Rosie has run 6+3+6+2=<<6+3+6+2=17>>17 miles. To reach her goal, she must run 20-17=<<20-17=3>>3 miles on Friday. Thus, she should run for 6/3=.5 hour which is 30 minutes. #### 30 Gary bought his first used car for $6,000. Gary borrowed the money from his dad who said he could pay him back the full amount over 5 years. Gary decided he would pay his dad back the full amount in 2 years. How much more is Gary spending per month to pay the loan off in 2 years instead of 5? A full year has 12 months. So 2 years is 2*12 = <<2*12=24>>24 months The loan amount is $6,000 that he will repay in 24 months so 6000/24 = $<<6000/24=250>>250 per month If he paid his dad back in 5 years that 5*12 = <<5*12=60>>60 months $6,000 loan spread out over 60 months is 6000/60 = $<<6000/60=100>>100 per month To pay it off in 2 years instead of 5, Gary is paying 250-100 = $<<250-100=150>>150 more per month #### 150