Monica made cookies for herself and her family. Her father ate 10 cookies and her mother ate half as much as the father. Her brother ate 2 more than her mother. How many cookies are left for Monica if she made 30 cookies in total?

Monica's mother ate half as many cookies as Monica's father, so she ate 10 cookies / 2 =

<<10/2=5>>5 cookies. Monica's brother ate 5 cookies + 2 cookies = <<5+2=7>>7 cookies. There were 30 cookies - 7 cookies - 5 cookies - 10 cookies = <<30-7-5-10=8>>8 cookies left for Monica. #### 8 Selene buys two instant cameras at $110 and three digital photo frames at $120 each. She gets a 5% discount on all the items she purchased. How much does she pay in all? Two instant camera cost 2 x $110 = $<<2*110=220>>220. Three digital photo frames cost 3 x $120 = $<<3*120=360>>360. Thus, the total amount is $220 + $360 = $<<220+360=580>>580. So, Selena gets a discount of 5/100 x 580 = $<<5/100*580=29>>29. Therefore, Selena pays a total of $580 - $29 = $<<580-29=551>>551. #### 551 A baker is making bread according to a recipe that requires him to use 3 eggs for every 2 cups of flour. If the baker wants to use up the 6 cups of flour he has remaining in his pantry, how many eggs will he need to use? If he uses 6 cups of flour, the baker will be making 6/2 = <<6/2=3>>3 times the normal amount that the recipe describes. Thus, he must use 3*3 = <<3*3=9>>9 eggs. #### 9 Jason's stove catches on fire. Buying a replacement will cost $1200 and fixing the damage to the wall behind it will cost 1/6th as much. How much does he spend in total? First find the cost of fixing the wall: $1200 * 1/6 = $<<1200*1/6=200>>200 Then add the cost of the replacement stove to find the total cost: $200 + $1200 = $<<200+1200=1400>>1400 #### 1400 Max attended 40 college courses in 2 years. Sid attended four times as many college courses as Max in the same period. What's the total of college courses they both attended? If Sid attended four times as many college courses as Max, he attended 4*40=<<4*40=160>>160 college courses. The total of college courses they both attended is 160+40 = <<160+40=200>>200 #### 200 There are three times as many girls as boys in the Biology class. The Physics class has 200 students. If the Biology class has half as many students as the Physics class, how many boys are in the Biology class? The Biology class has 200/2=<<200/2=100>>100 students. The boys in the Biology class are 1/4*100=<<1/4*100=25>>25 students. #### 25 Dana Point beach has four times the number of sharks as Newport Beach. If Newport Beach has 22 sharks, how many sharks are there in total on the two beaches? Since Dana Point beach has four times the number of sharks in Newport beach, there are 4*22 = <<4*22=88>>88 sharks at Dana Point. In total, the two beaches have 88+22 = <<88+22=110>>110 sharks #### 110 At the circus, the clown has 3 dozen balloons on a string in his hand. 3 boys and 12 girls buy a balloon each. How many balloons is the clown still holding? The clown is holding 3 x 12 = <<3*12=36>>36 balloons. This many children buy a balloon: 3 + 12 = <<3+12=15>>15 kids. After the children buy the balloons, the clown is holding this many in his hand 36 - 15 = <<36-15=21>>21 balloons. #### 21 Gabby is saving money to buy a new makeup set. The makeup set costs $65 and she already has $35. Gabby’s mom gives her an additional $20. How much money does Gabby need to buy the set? Deduct the amount saved from the total cost of the set. $65 - $35 = $<<65-35=30>>30 Deduct the amount of money Gabby received from her mom. $30 - $20 = $<<30-20=10>>10 #### 10 5,000 people live in a small town. 2,000 males live in that town and the rest of the population are females. Thirty percent of the female population wears glasses. How many females wear glasses? There are 5,000 - 2,000 = <<5000-2000=3000>>3,000 females that lives in the town. Since thirty percent of the female population wears glasses, 30/100 * 3,000 = <<30/100*3000=900>>900 females wear glasses. #### 900