Nurse Missy is attending to the needs of 12 patients in her hospital ward. Most of her patients require standard care, but one-third of her patients have special dietary requirements, which increases the serving time by 20%. At dinner time, she brings each patient their meal. It takes 5 minutes to serve each standard care patient. How long does it take, in minutes, for Missy to serve dinner to all of her patients?

Nurse Missy has 12*(1/3)=

<<12*(1/3)=4>>4 special needs patients. She has 12-4=<<12-4=8>>8 standard care patients. Special needs patients take 20% longer to serve, which means serving takes 1.2*5=6 minutes per patient. To serve dinner to all of her standard care patients, it will take 5*8=<<5*8=40>>40 minutes. To serve dinner to all of her special needs patients, it will take 6*4=<<6*4=24>>24 minutes. In total, it will take 40+24=<<40+24=64>>64 minutes to serve dinner to all of her patients. #### 64 Ronald can grill 15 hamburgers per session on his new grill. He needs to cook 115 hamburgers in total for tonight's party. He has already cooked 40 hamburgers. How many more sessions will it take Ronald to finish cooking all 115 hamburgers? He has to cook 115 hamburgers and has already cooked 40 so he needs to cook 115-40 = <<115-40=75>>75 more hamburgers He can only cook 15 hamburgers at a time so that means he has to cook 75/15 = <<75/15=5>>5 more cooking sessions #### 5 TJ ran a 10K race last Saturday. He ran the first half in 20 minutes. He completed the second half in 30 minutes. What was his average time per kilometer? He ran the 10 kilometers in a total of 20 + 30 = <<20+30=50>>50 minutes. Therefore, he ran at a pace of 50 minutes / 10 kilometers = <<50/10=5>>5 minutes per kilometer. #### 5 Alison bought some storage tubs for her garage. She bought 3 large ones and 6 small ones, for $48 total. If the large tubs cost $6, how much do the small ones cost? Let t be the price of the small tubs 3*6+6*t=48 18+6*t=48 6*t=48-18=30 6t=30 t=<<5=5>>5 dollars for each small tub #### 5 There are 40 more buyers in the grocery store today than yesterday. There were half the number of buyers yesterday as there were the day before, and the day before had 50 buyers. Nobody visited the store on more than one day. What's the total number of buyers who've visited the store in the three days? If yesterday the number of buyers was half the number of buyers the day before, then yesterday there were 1/2*50 = <<1/2*50=25>>25 buyers. Today has 40 more buyers than yesterday, so there were 40+25 = <<40+25=65>>65 buyers today. The total number of buyers in the store for the three days will be 65+25+50 = <<65+25+50=140>>140 buyers #### 140 A store owner buys clothes wholesale and adds 80% to the wholesale price to set the retail price. The retail price of a pair of pants is $36. What is the wholesale price? Let X be the wholesale price. The retail price of a pair of pants is X + X*80% = $36. Thus 1.8*X = $36. Thus X = $36 / 1.8 = $20. #### 20 Suraya picked 12 apples more than Caleb, and Caleb picked 5 apples less than Kayla. If Kayla picked 20 apples, how many more apples did Suraya pick than Kayla? Caleb picked 20 - 5 = <<20-5=15>>15 apples. Suraya picked 12 + 15 = <<12+15=27>>27 apples. Suraya picked 27 - 20 = <<27-20=7>>7 apples more than Kayla #### 7 James buys 3 CDs. Two of them are 1.5 hours each. The last one is twice that long. What is the combined length of the CDs? The long CD is 1.5*2=<<1.5*2=3>>3 hours The two shorter CDs have a combined length of 1.5*2=<<1.5*2=3>>3 hours So in total the CDs had a length of 3+3= <<3+3=6>>6 hours #### 6 Uki owns a bakery. She sells cupcakes at $1.50 each, cookies at $2 per packet, and biscuits at $1 per packet. In a day, she can bake an average of twenty cupcakes, ten packets of cookies, and twenty packets of biscuits. How much will be her total earnings for five days? Uki earns 20 x $1.50 = $<<20*1.5=30>>30 in selling 20 cupcakes. She earns 10 x $2 = $<<10*2=20>>20 for selling 10 packets of cookies, Additionally, she earns another 20 x $1 = $<<20*1=20>>20 for selling twenty packets of biscuits. Thus, in a day, she earns an average of $30 + $20 + $20 = $70. Therefore, for five days, Uki earns 5 x $70 = $<<5*70=350>>350. " #### 350 John decides to learn how to play the piano. He buys a piano for $500. He then hires a teacher for 20 lessons at $40 per lesson but ends up getting a 25% discount. How much did everything cost? The normal price of the lessons would be 20*40=$<<20*40=800>>800 The discount saves him 800*.25=$<<800*.25=200>>200 So the lessons cost him 800-200=$<<800-200=600>>600 That means everything costs 500+600=$<<500+600=1100>>1100 #### 1100