410,527 views
44 votes
44 votes
The cost of 5 pounds of apples is $12.45. What will be the cost of 12 pounds of apples if the

cost varies directly with the number of pounds purchased.
Edit View Insert Format Tools Table

User Dus
by
2.5k points

2 Answers

12 votes
12 votes

Answer: 29.88

Step-by-step explanation: if 5 pounds = $12.45,

then 12 pounds = x

Therefore, Cross-multiply

5 x = 12 (12.45)

5x=149.4

x=149.4/5

x=29.88

User David Stetler
by
2.9k points
18 votes
18 votes

Answer:

Explanation:

Equation

Cost = k*weight

Givens

weight = 5 pounds

Cost = 12.45

12 pounds

Find k

Cost = k*weight

cost = 12.45

weigh = 5 pounds Substitute these values into the equation

12.45 = k * 5 Divide by 5

12.45 /5 = k*5/5

2.49 = k

Solve for 12 pounds

  • k = 2.49
  • weight = 12 pounds

Cost = 2.49 * 12

Cost = 29.88

Answer

Cost = 29.88

User Cyt
by
2.7k points