1. Twelve months ago, Donnie bought shares of stock in a Biotechnology Company for $25 per share. If the shares are now selling for $30 per share, what is the percent of the increase in the value of the stock?
2. Last month, Curtis bought a new mountain bike for $250. In a store advertisement, the mountain bike is on sale for $210. What is the percent of the decrease in the value of the mountain bike?
3. Last week Hailey sold 40 raffle tickets for a school fundraiser. This week she sold 72 tickets. What is the percent of the increase in the number of raffle tickets sold?
Please help.
I'll be glad to check your answers.
This is all cross multiply and divide. It's really useful real world math that you will use a million times. Calculating tips, whether a sale price or a coupon price is better.
The easiest way I find is to set it up in a box where you have the full price next to 100% then the alternate price next to the alternate %. You then multiply the diagonal and then divide by the leftover.
A tshirt is worth $33 dollars and goes on sale for 20% off. You have $25, do you have enough money to buy the shirt?
Set it up:
$33 100%
$ ? 80%
Multiply the diagonal 80 times $33 = $2640
Divide by the remainder which is 100 = $26.40
No, you don't have enough money!
You can set the "box" up with any spot missing, as long as you have the other three. It will always work out.
$ ? 100%
$26.4 80%
26.4 times 100 = 2640
2640 divide by 80 = $33
Thanks.
god dangit i have this problem to its really hard i dont understand!!?!?!
Sure, I'd be happy to help you with these questions.
1. To find the percent increase in the value of the stock, we need to calculate the difference between the selling price and the purchase price, and then divide that difference by the purchase price. Let's calculate it step by step:
Step 1: Calculate the difference in the stock's value:
Difference = Selling Price - Purchase Price
Difference = $30 - $25 = $5
Step 2: Calculate the percent increase:
Percent Increase = (Difference / Purchase Price) * 100
Percent Increase = ($5 / $25) * 100 = 20%
Therefore, the percent increase in the value of the stock is 20%.
2. Similarly, to find the percent decrease in the value of the mountain bike, we need to calculate the difference between the original price and the sale price, and then divide that difference by the original price. Let's calculate it step by step:
Step 1: Calculate the difference in the bike's value:
Difference = Original Price - Sale Price
Difference = $250 - $210 = $40
Step 2: Calculate the percent decrease:
Percent Decrease = (Difference / Original Price) * 100
Percent Decrease = ($40 / $250) * 100 = 16%
Therefore, the percent decrease in the value of the mountain bike is 16%.
3. To find the percent increase in the number of raffle tickets sold, we need to calculate the difference in the number of tickets sold and divide it by the initial number of tickets sold. Let's calculate it step by step:
Step 1: Calculate the difference in the number of tickets sold:
Difference = Current number of tickets sold - Initial number of tickets sold
Difference = 72 - 40 = 32
Step 2: Calculate the percent increase:
Percent Increase = (Difference / Initial number of tickets sold) * 100
Percent Increase = (32 / 40) * 100 = 80%
Therefore, the percent increase in the number of raffle tickets sold is 80%.
I hope this helps! Let me know if there's anything else I can assist with.
You are studying the 7th grade? That must be a fun class. I think maybe you need math help?
When you provide a hint as to your own work, according to what you have learned, someone here will be glad to check it. Please, follow directions and indicate your school SUBJECT.