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

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.

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