Question

12334

Answer 1

Okay,

$18 - .15*18 = .85 * 18 = 15.30
You are correct so far.

Answer 2

Now, multiply 15.30 * 1.06 = 16.218 or $ 16.22

Answer 3

Congrats on that.

Answer 4

Sorry, I had to use your time while I cranked it out.

Answer 5

I will check.

Answer 6

.8 *1.5 = $1.20 per flower in Sept. Is that what you got?

Answer 7

20% off the October price would, I thought, take me back to the September cost before the 20% increase.

20% off the October price means 80% of the October price.

You may want to do separate calculations. Take .20 times 1.50.
Then, subtract that from 1.50. You'll get the same as .80 times 1.50.

Answer 8

I may be mixed up myself. How did you calculate the September flower cost?

Answer 9

This is from a previous rendition of this problem:

so P = $1.25 for September, 0.25 is the 20% of it... so if we increase 20% by October, it will be 1.25 + 0.25 = 1.50... hope you understand it...

Answer 10

Coming from here: http://openstudy.com/updates/53f2878fe4b01789aba7c7ae

Answer 11

By increase, it means additive.

This is confusing wording.

Sept price + .20 of the September price = October price.

S + .20S = 1.50

1.20S = 1.50
Sept = 1.50/1.20 = 1.25

Answer 12

So, when the problem reads "an increase of x%" or decrease of x%, you will be adding or subtracting. This is different from the first problem we did in this thread.

Answer 13

That is my thinking with this "increase" business.

Answer 14

Here is the trigger that says "add" --> The October price was a 20% ** increase** of the September price.

Answer 15

You had part A right. I haven't looked at part B.

Answer 16

Let's look at this increase concept again.

So, 1.25 + .2 (1.25) should equal 1.50. Does it?

Answer 17

Okay, let's look at part B.

Answer 18

Part B The seventh-grade class earned 40% of the selling price of each flower. In September, they sold 900 flowers. In October, they sold 700 flowers. The seventh-grade class earned more money in September by 75 dollars?

Answer 19

Sept: (.40 * 1.25 * 900 = ?

Compare to:

Oct (.40 * 1.40) * 700 = ?

Answer 20

Sept: (.40 * 1.25 * 900 = 450

Oct. (.40 * 1.50) * 700= 420

I made a typo above. The 1.40 shoud be 1.50

Answer 21

It looks as if the 7th grade class earned $30 more dollars in Sept than Oct.

They sold for less but had a greater volume of flowers sold.

Answer 22

Percentage is tricky and confusing for everybody.
And percentage increase as opposed to percent off makes for extra confusion.
But, just be aware and you can do it.
It also helps if whoever creates the problem is precise in phrasing the problem.

Answer 23

You are welcome.