It takes Polly 20 minutes to cook breakfast every day. She spends 5 minutes cooking lunch. She spends 10 minutes cooking dinner 4 days this week. The rest of the days she spends 30 minutes cooking dinner. How many minutes does Polly spend cooking this week?

How many minutes does Polly spend cooking breakfast? ** Polly spends 20*7 =

<<20*7=140>>140 minutes cooking breakfast. How many minutes does Polly spend cooking lunch? ** She spends 5*7= <<5*7=35>>35 minutes cooking lunch. How many minutes does Polly spend cooking dinner? ** She spends (10*4)+(30*3)= <<10*4+30*3=130>>130 minutes cooking dinner. How many minutes does Polly spend cooking this week? ** Therefore, she spends 140+35+130=<<140+35+130=305>>305 minutes cooking this week. #### 305 Robert had 25 balls. Tim gave him half of his 40 balls. How many balls does Robert have now? How many balls did Tim give to Robert? ** Tim gave 40 / 2 = <<40/2=20>>20 balls to Robert. How many balls does Robert have now? ** Robert now has 25 + 20 = <<25+20=45>>45 balls. #### 45 Linda makes and sells necklaces at craft fairs. At her most recent fair she sold 4 necklaces and 8 rings for a total of $80. If each necklace costs $12, how much does each ring cost? Define a variable ** Let’s use r for the cost of each necklace Write an equation ** 4*12+8*r=80 Combine like terms ** 48+8*r=80 Subtract 48 ** 8*r=80-48=32 Divide by 8 ** 8r=32 How much does each ring cost? ** r=<<4=4>>4 dollars for each ring #### 4 Robert and Teddy are planning to buy snacks for their friends. Robert orders five boxes of pizza at $10 each box and ten cans of soft drinks at $2 each. Teddy buys six hamburgers at $3 each and an additional ten cans of soft drinks. How much do they spend in all? How much do the pizza boxes cost? ** Five boxes of pizza cost 5 x $10 = $<<5*10=50>>50. How much do the soft drinks cost? ** Ten cans of soft drinks cost 10 x $2 = $<<10*2=20>>20. How much does Robert spend? ** So, Robert spends $50 + $20 = $<<50+20=70>>70. How much do the hamburgers cost? ** Six hamburgers cost 6 x $3 = $<<6*3=18>>18. How much does Teddy spend? ** Thus, Teddy spends $18 + $20 = $<<18+20=38>>38. How much do they spend in all? ** Therefore, they spend $70 + $38 = $<<70+38=108>>108 in all. #### 106 Jeff plays tennis for 2 hours. He scores a point every 5 minutes. He wins a match when he scores 8 points. How many games did he win? How many minutes did Jeff play for? ** He played for 2*60=<<2*60=120>>120 minutes How many points does Jeff score? ** So he scores 120/5=<<120/5=24>>24 points How many games did Jeff win? ** That means he won 24/8=<<24/8=3>>3 games #### 3 Shyne can grow 14 eggplants in every seed packet and 10 sunflowers in every seed packet. She bought 4 seed packets of eggplants and 6 seed packets of sunflower, how many plants can Shyne grow in her backyard? How many eggplants can Shyne grow? ** Shyne can grow 14 x 4 = <<14*4=56>>56 eggplants. How many sunflowers can Shyne grow? ** She can grow 10 x 6 = <<10*6=60>>60 sunflowers. How many plants can Shyne grow? ** So, she can grow a total of 56 + 60 = <<56+60=116>>116 plants in her backyard. #### 116 Justin is 26 years old. When he was born his elder sister Jessica was 6 years old. James is their elder brother and is 7 years older than Jessica. How old will James be after 5 years? How old is Jessica? ** Jessica is 26 + 6 = <<26+6=32>>32 years old. How old is James? ** James is 32 + 7 = <<32+7=39>>39 years old. How old will James be after 5 years? ** After 5 years, James will become 39 + 5 = <<39+5=44>>44 years old. #### 44 Officer Hopps has to give out 200 tickets in May. The first 15 days he averages 8 tickets a day. How many does he have to average each day for the rest of the month to reach his required goal? How many tickets has Officer Hopps given out? ** He has given out 120 tickets because 15 x 8 = <<15*8=120>>120 How many days does Officer Hopps have left? ** He has 16 days left to had out tickets because 31 - 15 = <<31-15=16>>16 How many more tickets does Officer Hopps have to give out? ** He has to give out 80 more because 200 - 120 = <<200-120=80>>80 How many tickets does Officer Hopps have to give out each day? ** He has to give out 5 a day because 80 / 16 = <<80/16=5>>5 #### 5 Jack is ordering custom baseball caps for him and his two best friends. Jack's head is 12 inches in circumference. Charlie's head is 9 inches more than half the circumference of Jack's head. Bill's head is 2/3 the circumference of Charlie's head. How many inches in circumference is Bill's head? How many inches is half the circumference of Jack's head? ** First find half the circumference of Jack's head: 12 inches / 2 = <<12/2=6>>6 inches How big is Charlie's head? ** Then find how big Charlie's head is: 6 inches + 9 inches = <<6+9=15>>15 inches How big is Bill's head? ** Then find how big Bill's head is: 15 inches * 2/3 = <<15*2/3=10>>10 inches #### 10 Last night, Jim bought a $7 lamp and a bulb which cost $4 less. If he bought 2 lamps and 6 bulbs, how much did Jim pay in all? How much does the bulb cost? ** The cost of the bulb is $7 - $4 = $<<7-4=3>>3. How much do the lamps cost? ** The cost of 2 lamps is $7 x 2 = $<<7*2=14>>14. How much do the bulbs cost? ** The cost of 6 bulbs is $3 x 6 = $<<3*6=18>>18. How much did Jim pay in all? ** Jim paid a total of $14 + $18 = $<<14+18=32>>32. #### 32