There are 14 girls, 11 boys, and their parents at a park. If they split into 3 equally sized playgroups, each group contains 25 people. How many parents were at the park?

There are 14 girls, 11 boys, and their parents at a park. If they split into 3 equally sized playgroups, each group contains 25 people. How many parents were at the park?

There are 3 groups * 25 people/group =

<<3*25=75>>75 people in total. There are 14 girls + 11 boys = <<14+11=25>>25 children in total. There are 75 people - 25 children = <<75-25=50>>50 parents. #### 50 Tony is driving his car between his town and a friend's down. The towns are 120 miles apart and he gets there in 3 hours. The next day, he is driving to see another friend who lives 200 miles away from his friend. If he drives at the same speed, how long will the drive take? He is driving 40 MPH because 120 / 3 = <<120/3=40>>40 It will take him 5 hours because 200 / 40 = <<200/40=5>>5 #### 5 Venny spent $15000 on a used car which cost 40% of the original price. What was the original price of the car? Let x be the original price of the car. Then 40% * x = $15000 Thus x = $15000 / 0.4 = $<<15000/0.4=37500>>37500 #### 37500 Among the career home run leaders for MLB, Hank Aaron has 175 fewer than twice the number that Dave Winfield has. Hank Aaron hit 755 home runs. How many home runs did Dave Winfield hit in his career? Let x be the number of home runs Dave Winfield hit. 755=2x-175 930=2x x=<<465=465>>465 home runs #### 465 A typical tournament of tennis has 4 rounds. There are 8 games in the first round, 4 in the second round, 2 in the third round and 1 during the finals. If each game requires new tennis balls, and on average each game uses 5 cans of tennis balls, how many tennis balls in total are used at the end of the tournament if each can has 3 tennis balls? There are a total of 8+4+2+1 = <<8+4+2+1=15>>15 games of tennis in a typical tournament If 1 game uses 5 cans of tennis balls, then 15 games would use 15*5 = 75 cans of tennis balls If 1 can of tennis balls has 3 balls, then 75 cans would have <<75*3=225>>225 balls #### 225 When Harriett vacuumed the sofa and chair she found 10 quarters, 3 dimes, 3 nickels, and 5 pennies. How much money did Harriett find? She found 10 quarters that are $0.25 each so she found 10*.25 = $<<10*.25=2.50>>2.50 She found 3 dimes that are $0.10 each so she found 3*.10 = $<<3*.10=0.30>>0.30 She found 3 nickels that are $0.05 each so she found 3*.05 = $<<3*.05=0.15>>0.15 She found 5 pennies that are $0.01 each so she found 5*.01 = $<<5*.01=0.05>>0.05 All total she found 2.50+.30+.15+.05 = $3.00 in change #### 3 Charlie owns one flute, two horns, and a harp. Carli owns twice as many flutes as Charlie, half as many horns as Charlie, but no harps. What is the combined total number of musical instruments owned by Charlie and Carli? Charlie owns one flute, two horns, and a harp for a total of 1+2+1=<<1+2+1=4>>4 instruments. Twice as many flutes as Charlie is 2*1=<<2*1=2>>2 flutes, Half as many horns as Charlie is 2/2=<<2/2=1>>1 horn Thus, Carli owns 2+1=<<2+1=3>>3 instruments. Therefore, the combined total number of musical instruments owned by Charlie and Carli is 4+3=<<4+3=7>>7 instruments. #### 7 Mark constructed a deck that was 30 feet by 40 feet. It cost $3 per square foot. He then paid an extra $1 per square foot for sealant. How much did he pay? The deck is 30*40=<<30*40=1200>>1200 square feet He pays 3+1=$<<3+1=4>>4 per square foot So he paid 1200*4=$<<1200*4=4800>>4800 #### 4800 Bobby made a big batch of soup weighing 80 kg. Each day the batch gets reduced by half. How many kg will it reach on the fourth day after he made the soup? On the first day, the soup reduces down to 80/2=<<80/2=40>>40 kg. On the second day, it reduces down to 40/2=<<40/2=20>>20 kg. On the third day, it is reduced to 20/2=<<20/2=10>>10 kg. And on the fourth day, it is finally down to 10/2=<<10/2=5>>5 kg. #### 5 Gemma ordered four pizzas at $10 each, and she gave a $5 tip to the delivery person. How much change did she get back if she gives one fifty-dollar bill? The cost of the four pizzas is 4 x $10 = $<<4*10=40>>40. The total cost, including the tip, is $40 + $5= $<<40+5=45>>45. Therefore, Gemma gets a change of $50 - $45 = $<<50-45=5>>5. #### 5