Singles Forum Math Problem of the Day! (Please Show Your Work.)

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Aug 2, 2009
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I'll make up a math problem

say the radius of a circle measures sqrt(7) inches

find the area of the circle in square inches

hint: there's an approximation for pi that makes the computation really easy



Area = pi x (radius squared), as shown above..

Radius = square root of 7, which is 2.645

Area = 7.14 x (2.645 squared)

2.645 squared = 7

Area = 7.14 x 7

Area = 4,998 sq. inches
 
Aug 2, 2009
24,580
4,269
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Ok, here's a math problem that shouldn't be too hardiharhar...



Betty owns a candy store that sells candy by the pound...

She has a batch of Reeses Pieces that sells for $3 a pound, and a batch of Malted Milk Balls that sell for $2 a pound...

If she makes a new mixed batch with 2 pounds of Reeses Pieces and 1 pound of Malted Milk Balls, what should the price of the new batch be?
____________________________________

Reeses Pieces = $3 a pound

Malted Milk Balls = $2 a pound

New batch with 2 pounds Reeses pieces, and 1 pound Malted milk balls = $??? a pound
 

cinder

Senior Member
Mar 26, 2014
4,328
2,361
113
Ok, here's a math problem that shouldn't be too hardiharhar...



Betty owns a candy store that sells candy by the pound...

She has a batch of Reeses Pieces that sells for $3 a pound, and a batch of Malted Milk Balls that sell for $2 a pound...

If she makes a new mixed batch with 2 pounds of Reeses Pieces and 1 pound of Malted Milk Balls, what should the price of the new batch be?
____________________________________

Reeses Pieces = $3 a pound

Malted Milk Balls = $2 a pound

New batch with 2 pounds Reeses pieces, and 1 pound Malted milk balls = $??? a pound
Assuming she's selling it for exactly the same price per pound and the single ingredients it should be $2.67 / pound. (2 pounds pieces @ $3 per pound = $6 +$2 for the pound of malt balls = $8 for 3 pounds of mix 8/3 = 2.666666666... )

But if she's a savy business woman and likes nice round prices she'll probably price it at $2.75 per pound (after all she has to account for the time and effort spent measuring and mixing those two candies together).
 

cinder

Senior Member
Mar 26, 2014
4,328
2,361
113



Area = pi x (radius squared), as shown above..

Radius = square root of 7, which is 2.645

Area = 7.14 x (2.645 squared)

2.645 squared = 7

Area = 7.14 x 7

Area = 4,998 sq. inches
Try again.

pi = 3.14159

radius squared = 7

so area of said circle should be just over 21 square inches or if I pull out my calculator 21.99113 square inches.
 
Aug 2, 2009
24,580
4,269
113
:ROFL: Oh well, it's been awhile since I've had to use pi for anything. :whistle: At least I remembered the .14 :D
 
Aug 2, 2009
24,580
4,269
113
Assuming she's selling it for exactly the same price per pound and the single ingredients it should be $2.67 / pound. (2 pounds pieces @ $3 per pound = $6 +$2 for the pound of malt balls = $8 for 3 pounds of mix 8/3 = 2.666666666... )

But if she's a savy business woman and likes nice round prices she'll probably price it at $2.75 per pound (after all she has to account for the time and effort spent measuring and mixing those two candies together).
You got it, Cinder!! :D ($2.66 is correctomundo! And yea, I agree that rounding it out to $2.75 would be a smart business decision :))