Question

You buy 10 pounds of bird seed at store A for $11.50. Your friend buys 15 pounds of bird seeds store B for $19.50. How much less would you spend by buying 20 pounds of bird seed at store with the better deal?

Answer 1

Answer: $3

Step-by-step explanation:

1. find the cost of 1 pound of birdseed from store A

10 Pounds from Store A= $11.50

1 Pound from Store A= $11.50÷10= $1.15

2. Next, find the cost of 1 pound of birdseed from store B

15 Pounds from Store B= $19.50

1 Pound from Store B= $19.50÷15= $1.30

3. Now, find the cost of 20 pounds of bird seed from Store A

1 Pound from Store A= $1.15

20 Pounds from Store A= 20×$1.15=$23

4. find the cost of 20 pounds of bird seed from Store B

1 Pound from Store B= $1.30

20 Pounds from Store B= 20×$1.30=$26

5. Compare the 2 prices

Difference= $26-$23=$3

Therefore, you would save $3 if you buy 20 pounds of bird seed at Store A.

Answer 2

$3 would be spent less by buying 20 pounds of bird seed at store A

Let x represent the cost of bird seed per pound at store A and y represent the cost of bird seed per pound at store B

You buy 10 pounds of bird seed at store A for $11.50, hence:

10x = 11.50

x = $1.15 per pound

Your friend buys 15 pounds of bird seeds store B for $19.50, hence:

15y = 19.50

y = $1.30 per pound

Hence store A has a better deal of $1.15 per pound

For 20 pounds of bird seed:

At store A = 20 * $1.15 = $23

At store B = 20 * $1.30 = $26

Money saved = $26 - $24 = $3

Hence $3 would be spent less by buying 20 pounds of bird seed at store A

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