A medium sized apple has 70 calories. This is 10 calories less than 1/4 of the calories in an old westie chocolate bar. How many calories are in the chocolate bar? What is the best model for yourr first step

The answer to your question is: 320

Step-by-step explanation:

Data

1/4 of the calories in a chocolate - 10 = calories in an apple

Equation

Calories in a chocolate bar = 4 (calories in apple + ten)

= 4 (70 + 10)

= 4 (80)

= 320

320 calories.

Step-by-step explanation:

Let the number of calories in the chocolate bar be x, then:

1/4 x - 10 = 70

1/4x = 80

Multiply both sides by 4:

x = 320 calories.