Amedium sized apple has 70 calories. this is 10 calories less than 1/4 of the calories in an old westie chocolate bar. we need to find out how many calories are in the chocolate bar. choose the best model for the first step of this problem.

Considering that 80 calories is a quarter of the numbrr of calories of a chocolate bar then the chocolate bar would hold 320 calories for a weight of 50g?

An Old Westie Chocolate Bar has 320 calories.

Step-by-step explanation:

Medium sized apple: 70 calories

A medium sized apple has 10 calories less than 1/4 of a chocolate bar, therefore, 1/4 of a chocolate bar has 80 calories. In order to know the total amount of calories of that bar, we have to multiply 80 by 4.

Old Westie Chocolate Bar: (70 + 10) x 4 = 80 x 4 = 320

As we can see, the chocolate bar has 320 calories.

probability for j is 1/4

while

a is 1/6