For Roger's phone to function optimally, he can have a maximum of 50 apps on his phone. However, the recommended number of apps is 35. If Roger has twice the recommended number of apps, how many apps must he delete for his phone to function optimally again?

Roger has 35 x 2 =

<<35*2=70>>70 apps on his phone. He needs to delete 70 - 50 = <<70-50=20>>20 apps. #### 20 Lanie has been sick and was only able to work 4/5 of her usual 40-hour week. If her hourly rate is $15, how much was her salary for that week? Lanie was only able to work for 40 * 4/5 = <<40*4/5=32>>32 hours in that week. Thus, her salary was 15 * 32 = $<<15*32=480>>480. #### 480 James drives to Canada at 60 mph. It is a distance of 360 miles. He has a 1 hour stop along the way. How long does he take to get to Canada? He spends 360/60=<<360/60=6>>6 hours driving That means the trip takes 6+1=<<6+1=7>>7 hours #### 7 Bret and a team of 3 co-workers were working late so he ordered dinner for everyone. They decided on Chinese. Each main meal costs $12.0. They also ordered 2 appetizers that were $6.00 each. He includes a 20% tip and an extra $5.00 to make it a rush order. How much does Bret spend on dinner? There are 4 co-workers and each of their meals is $12.00 so 4*12 = $<<4*12=48.00>>48.00 They order 2 appetizers at $6.00 each so 2*6 = $<<2*6=12.00>>12.00 The meals costs $48.00 and the appetizers costs $12.00 for a total of 48+12 = $<<48+12=60.00>>60.00 A 20% tip on the $60.00 order is .20*60 = $<<.20*60=12.00>>12.00 So the meal is $60.00, the tip is $12.00 and he adds a $5.00 rush for a total of 60+12+5 = $<<60+12+5=77.00>>77.00 #### 77 A library has a collection of 100 historical novels arranged on a shelf. 5 people borrow 2 books each from the shelf on a particular day, and 20 more books are borrowed from the shelf on the second day. How many books are remaining on the shelf after the second day? Five people borrowed 5 people * 2 books/person = <<5*2=10>>10 books on the first day. After the second day, the total number of borrowed books increased to 10 books + 20 books = <<10+20=30>>30 books. The total number of books on the shelf after the second day is 100 books - 30 books = <<100-30=70>>70 books #### 70 Debbie works at a post office packing boxes to mail. Each large box takes 4 feet of packing tape to seal, each medium box takes 2 feet of packing tape to seal, and each small box takes 1 foot of packing tape to seal. Each box also takes 1 foot of packing tape to stick the address label on. Debbie packed two large boxes, eight medium boxes, and five small boxes this afternoon. How much tape did she use? Debbie used 4 * 2 = <<4*2=8>>8 feet of tape for the large boxes. She used 2 * 8 = <<2*8=16>>16 feet of tape for the medium boxes. She used 1 * 5 = <<1*5=5>>5 feet of tape for the small boxes. There were 2 + 8 + 5 = <<2+8+5=15>>15 boxes in all. She used 1 * 15 = <<1*15=15>>15 feet of tape for the address labels. Thus, she used 8 + 16 + 5 + 15 = <<8+16+5+15=44>>44 feet of tape in all. #### 44 Betty bought 1 kg of oranges and 3 kg of apples. The total cost of oranges was $12. The apples were two times cheaper than the oranges. How much did Betty pay for 1 kg of apples? The cost of the apples was $12 / 2 = $<<12/2=6>>6. When the cost of 3 kg of apples was $6, then the cost of 1 kg of apples was $6 / 3 kg = $<<6/3=2>>2/kg. #### 2 Tim had a birthday party with a clown that cost $100 an hour for 4 hours. He also rented a bounce house for half the time that cost 3 times as much an hour. Everything else for the party cost $1000. How much did his birthday cost? The clown cost 100*4=$<<100*4=400>>400 The bounce house cost 100*3=$<<100*3=300>>300 per hour He rented it for 4/2=<<4/2=2>>2 hours So it cost 300*2=$<<300*2=600>>600 That means the total cost was 400+600+1000=$<<400+600+1000=2000>>2000 #### 2000 A pencil costs $0.5 each and a folder costs $0.9 each. An office needs two dozen pencils and 20 pieces of folders. How much does it cost to buy the office supplies? Two dozens of pencils are equal to 2 x 12 = <<2*12=24>>24 pencils. So the total cost of pencils is $0.5 x 24 = $<<0.5*24=12>>12. The total cost of folders is $0.9 x 20 = $<<0.9*20=18>>18. Thus, the cost to buy the office supplies is $12 + $18 = $<<12+18=30>>30. #### 30 Joshua bought 25 oranges for $12.50. If he sells each one for 60c, how much profit in cents will he make on each orange? $1 is equivalent to 100 cents so $12.50 is equivalent to 100*12.50 = <<12.50*100=1250>>1250 cents He bought 25 oranges for 1250 cents so each orange cost 1250/25 = <<1250/25=50>>50 cents each If he sells each orange for 60 cents, he is making a profit of 60-50 = <<60-50=10>>10 cents on each one. #### 10