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Viktor [21]
3 years ago
11

On Monday, Josh went to the Farmer's Market. He bought 55 peaches and 22 watermelons for $7.75.. On Thursday, Josh went back to

the Farmer's Market and bought 33 peaches and 44 watermelons for $10.95. What systems of equations can be used to determine the cost for one peach (p)(p) and one watermelon (w)?
Mathematics
2 answers:
Oxana [17]3 years ago
7 0

Answer:

The system of equations is

  • 5p+2w=7.75
  • 3p+4w=10.95.

When solved

  • The cost of one watermelon(w) is $2.25
  • The cost of one peach(p) is $0.65

Step-by-step explanation:

Let the price of one peach =p

Let the price of one watermelon=w

On <u>Monday</u>, bought 5 peaches and 2 watermelons for $7.75.

  • 5p+2w=7.75

On Thursday, Josh went back to the Farmer's Market and bought 3 peaches and 4 watermelons for $10.95.

  • 3p+4w=10.95.

The system of equation that could be used to solve for the price of one peach (p) and one watermelon (w) is therefore:

  • 5p+2w=7.75
  • 3p+4w=10.95.

To solve this, Multiply the first equation by 4 and the second equation by 2.

  • 20p+8w=31
  • 6p+8w=21.9

Subtract

14p=9.1

Divide both sides by 14

p=$0.65

Next, we substitute p=$0.65 in any equation to obtain w.

5p+2w=7.75

5(0.65)+2w=7.75

2w=7.75-3.25

2w=4.5

w=$2.25

Therefore:

  • The cost of one watermelon(w) is $2.25
  • The cost of one peach(p) is $0.65
Oduvanchick [21]3 years ago
6 0

Answer:

For Monday

55p +22 w = 7.75   (1)

For Thursday

33p +44 w = 10.95  (2)

w = 0.20455

p= \frac{7.75-22*0.20455}{55}=0.059091

Step-by-step explanation:

For this case we define the following notation:

p represent the individual price of peachs

w represent the individual price of water mellons

From the info given we can set up the following equations for the total cost:

For Monday

55p +22 w = 7.75   (1)

For Thursday

33p +44 w = 10.95  (2)

And if we solve for p from equation (1) we got:

p = \frac{7.75-22w}{55}   (3)

And replacing equation (3) into equation (2) we got:

33 (\frac{7.75-22w}{55}) +44w =10.95

4.65-13.2w +44w = 10.95

30.8w = 10.95-4.65

30.8 w = 6.3

w = 0.20455

And the price for the watermellon would be:

p= \frac{7.75-22*0.20455}{55}=0.059091

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