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In the first week there will be 5000 visitors. In the second week, there will be 10% fewer visitors than in the first week. Can you calculate how many visitors there will be in the second week?
No. In math, in addition to solving a problem using some method, you need to look at your answer and see if it makes sense. If there will be 10% FEWER visitors in the second week, how can you end up with 10 times more visitors?
This is how you do it.
In the first week, there are 5000 visitors. Call the initial number, 5000, 100%. In the second week, there will be 10% fewer visitors. That means in the second week, there will be 100% - 10% = 90% of the 5000 visitors.
Now we calculate 90% of 5000. 90% of 5000 = 90/100 * 5000 = 0.90 * 5000 = 4500
Ok so far?
but the number that you're getting is decreasing. the answer choices are, 34,730, 24,850, 34790, 29,850
so it goes down by 500
You see the table above. That is where we are so far in solving this problem. We know how many visitors there will be in the first and second weeks. Now we need to find the numbers for weeks 3 through 7. Then we add all numbers up.
ok got you!
You asked a good question. The answer is no. The number goes down by 10% of the previous week. Since the first week has 5000 visitors, 10% of 5000 is 500, so from week 1 to week 2 it went down by 500.
Now to find the number for week 3, think of week 2 as 100%. What is 90% of 4500?
You are always losing 10% of the previous week, but each week, the number is decreasing, so 10% of the previous week is going to be less and less each week that goes by.
Exactly. You put it on our table. |dw:1439167056423:dw|
Now start with 4050, and find 90% of that number. 0.90 * 4050 = 3645 |dw:1439167103110:dw|
You see how you get the following week's number? Multiply each week's number by 0.9 Fill in the table's right column. Then add all numbers in the right column.
ok doing it now.
i ended up getting 22440.155
I get 26,085. The problem is the answer is not in your choices.
ok i had a typo
Are you sure you copied the problem correctly?
and yes, thats what im trying to see.
yes, it's copied word from word.
Are you sure the number goes down 10% each week. There is a percent in the problem?
Wait. I'm the one who misread your problem.
10 people per week
I just reread it. The problem states the number goes down 10 people per week. I read it as 10 percent per week. My mistake. Sorry about that.
lol it's fine. thank you for being patient with me. math gives me a headache
That means it's a simpler problem. Let's use the same table, and clear out the second column except for the 5000 in the first week.
Now for each subsequent week, we just subtract 10 from the previous week. As you can see, this is an easier problem than I thought because of my misreading.
are you serious? lol i feel so dumb
that was easy but reading it, i thought that i had to do more
Good job! Exactly. That's what I got. As you can see, it's not a difficult problem. Sorry to have complicated it above.
lol no it's perfectly fine. i appreciate your help and patience
You're very welcome.
thank you! i have more problems, but i wont burden you. ill try to work them out first, but thank you!
1. You are welcome. 2. Try your problems by yourself first. If you need help, don't hesitate to ask for it. 3. Helping is not a burden.