Question

(b) The pizzeria sold 85 pizzas yesterday. Suppose the number of pizzas sold today was 60. Determine the percent increase or decrease in the pizzas sold, rounded to the nearest hundredth. Show your work.

_____________ % (Increase or decrease?)
PLEASE SHOW WORK thank you :D

Answer 1

Hi! 29.4118 (decrease) is your answer. My work's below!

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Here's a formula for percentages I've used...

(Old # - New # ) /Old # x 100

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In this case, the old number is 85, and the new number (today's pizza number) is 60.

(85 - 60) / 85 x 100 =

(85 - 60 = 25)

25 / 85 = 0.29411764705

0.29411764705 x 100 = 29.411764705

Now, round it to the nearest hundredth.

29.4118 (decrease)

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Good luck! :)

~pinetree

Answer 2

The difference is 21.21%

work shown below

Explanation:

I'm going to first find the difference between both.

85-60=25

Now, we have to find 25% of 85

We don't have to use the formula, we can do this in our brain, like this -

We can see that 25% of 80 = 20, since 25 = 1/4, and 1/4 of 80 = 20, then, there is the 5 part left, how do we find that??? well, 25% of 5 = 1.25, since 1.25x5=5,

So hence, our answer is 21.25