A play was held in an auditorium and its ticket costs $10. An auditorium has 20 rows and each row has 10 seats. If only 3/4 of the seats were sold, how much was earned from the play?

How many seats are there? ** There are 20 x 10 =

<<20*10=200>>200 seats in the auditorium. How many seats were sold? ** Only 200 x 3/4 = <<200*3/4=150>>150 seats were sold. How much was earned from the play? ** Hence, the earnings from the play is $10 x 150 = $<<10*150=1500>>1500. #### 1500 50% of substitute teachers walk out after 1 hour of teaching. 30% of the remainder quit before lunch. If 60 substitute teachers show up at 7 AM, how many will be left after lunch? How many teachers are left after half quit? ** First find the number of substitute teachers left after half quit: 60 teachers / 2 = <<60/2=30>>30 teachers How many teachers quit after an hour? ** Then find how many teachers quit after an hour but before lunch: 30 teachers * 30% = <<30*30*.01=9>>9 teachers How many teachers are left after lunch? ** Then subtract that number from the number of teachers left after one hour to find how many are left after lunch: 30 teachers - 9 teachers = <<30-9=21>>21 teachers #### 21 Andy and Dawn spent the weekend cleaning the house. When putting away the laundry Andy took six minutes more than two times the number of minutes it took Dawn to wash the dishes. If it took Dawn 20 minutes to wash the dishes how many minutes did it take Andy to put away the laundry? How many minutes did it take Dawn to wash the dishes? ** Two times the minutes it took Dawn to wash the dishes is 20*2= <<20*2=40>>40 How many minutes did Andy take to put away the laundry? ** Andy took 40+6= <<40+6=46>>46 minutes to put away the laundry #### 46 Janet bought some muffins at the bakery. Each muffin is 75 cents. Janet paid $20 and got $11 in change back. How many muffins did Janet buy? How much did Janet pay? ** Janet paid with $20 and got back $11, so her muffins cost $20 - $11 = $<<20-11=9>>9. How many muffins did Janet buy? ** Each muffin cost 75 cents, so she bought 9/.75 = <<9/.75=12>>12 muffins #### 12 It cost 50 dollars to get cats ready for adoption, 100 dollars to get adult dogs ready for adoption, and 150 to get puppies ready for adoption. If 2 cats, 3 adult dogs, and 2 puppies are adopted what was the cost to get them ready? How much did it cost to get the cats ready? ** The cost to get the cats ready is 2*50=$<<2*50=100>>100 How much did it cost to get the adult dogs ready? ** The cost to get adult dogs ready is 3*100=$<<3*100=300>>300 How much did it cost to get the puppies ready? ** The cost to get puppies ready is 2*150=$<<2*150=300>>300 What was the total cost to get the cats, dogs, and puppies ready? ** The total cost is 300+300+100=$<<300+300+100=700>>700 #### 700 Hannah brought $30 to the county fair. She spent half of it on rides and another $5 on dessert. How much, in dollars, is left? How much did Hannah spend on rides? ** She spent $30/2=$<<30/2=15>>15 on rides. How much did Hannah spend in total? ** She spent a total of $15+$5=$<<15+5=20>>20 including dessert. How much does Hannah have left? ** She has $30-$20=$<<30-20=10>>10 left. #### 10 Carl wants to buy a new coat that is quite expensive. He saved $25 each week for 6 weeks. On the seventh week, he had to use a third of his saving to pay some bills. On the eighth week, his dad gave him some extra money for him to buy his dream coat. If the coat cost $170, how much money did his dad give him? How much did Carl save in 6 weeks? ** Carl saved in 6 weeks $25/week x 6 weeks = $<<25*6=150>>150 How much did Carl have to pay in bills? ** On the seventh week, he ended up having to pay in bills $150/3 = $<<150/3=50>>50 How much did Carl have left after the seventh week? ** His savings were then $150 - $50 = $<<150-50=100>>100 How much money did his dad give him? ** His dad gave him $170 – $100 = $<<170-100=70>>70 #### 70 John has 10 members of his family on his father's side. His mother's side is 30% larger. How many people are there in total? How many people are on his mother's side? ** His mother's side is 10*.3=<<10*.3=3>>3 people larger than his father's side How many people are on his mother's side? ** So his mother's side has 10+3=<<10+3=13>>13 people How many people are there in total? ** So the total number of people is 13+10=<<13+10=23>>23 #### 23 Anthony keeps a bottle of vinegar in his cupboard for 2 years. Each year 20% of the vinegar evaporates. What percent of the vinegar is left after 2 years? How much of the vinegar is left after each year? ** First find what percent of the vinegar is still in the bottle after each year: 100% - 20% = 80% How much of the vinegar is left after 2 years? ** Then multiply the amount of vinegar left after one year by the percentage left after each year to find how much is left after 2 years: 80% * 80% = 64% #### 64 My cat's empty bowl weighs 420 grams. If I give my cat 60 grams per day and I always fill her bowl every 3 days, how much does her bowl weigh if after I ended up refilling her empty bowl she only ate 14 grams? How many grams do I give my cat? ** If I give my cat 60 grams per day and I fill it to last 3 days, then I put a total of 60*3 = <<60*3=180>>180 grams into her bowl How much does the empty bowl weigh? ** If the empty bowl weighs 420 grams and I put 180 grams the total weight is = 420+180 = <<420+180=600>>600 grams How much does the bowl weigh after my cat ate 14 grams? ** If my cat only ate 14 grams then the bowl right now weighs 600-14 = <<600-14=586>>586 grams #### 586