Yesterday, the snow was 2 feet deep in front of Archie’s house. Today, the snow depth dropped to 1.6 feet because the day is so warm. What is the percent change in the depth of the snow?

Question

sammixboo · Answer

So first, subtract the original number, which is 2, with the second number, which is 1.6. 

After you finish Subtracting 2 - 1.6, divide our answer by 2, the original number. 

So pretty much our problem so far looks like this |dw:1442328032710:dw|

anonymous · Answer

so you will get 12

sammixboo · Answer

I'm sorry, subtract 1.6 - 2, not 2 - 1.6|dw:1442328137383:dw|

anonymous · Answer

so it 2

sammixboo · Answer

Not quite. 1.6 - 2 will be a negative decimal

anonymous · Answer

-0.4

sammixboo · Answer

Right, so now we have |dw:1442328255258:dw|

sammixboo · Answer

What do you get? This will also be a negative decimal

anonymous · Answer

-0.2

sammixboo · Answer

Right! The last step is to multiply our answer, -0.2, by 100 and throw on a percent sign.

what is -0.2 x 100?

anonymous · Answer

-20

sammixboo · Answer

ight, so there is a -20% change

sammixboo · Answer

Also, 20% decrease

anonymous · Answer

thanks

anonymous · Answer

Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class?

sammixboo · Answer

Well, we know that the boys equal to 40% of the class, right?

anonymous · Answer

yes

anonymous · Answer

this is a new question Lydia bought a shirt at 20% off its retail price of $40. She paid 5% tax on the price after the discount. How much did Lydia pay for the shirt?