Math help please =]?

Question

- Describe how you would set up the equation for the following problem: If 12 pencils cost $1.92, find the cost of one pencil.

- Describe how you would set up the equation for the following problem: If tickets for a concert cost $10 each, how many can you buy with $35?

I just don't get how to describe how to set them up even though I know how to set them up. =]

Answer 1

12 divided by 1.92

Answer 2

* 1.92 divided by 12

$1.92 is how much you spend to buy 12 pencils. To determine how much one pencil cost, you would divide 1.92 by 12

* 35 divided by 10

You have to find out how many tickets you can buy with $35 dollars. To do this you must determine how many sets of $10 you have. Therefore, you divide 35 by 10.

Answer 3

1) let the cost of one pencil be $x

then, cost of 12 pencil will be $12x

so,

12x = 1.92

solve for x.

2) Let  x  number of people can buy tickets with $35

10x= 35

x= 35/10

three and half people can have the tickets if there is a option for half ticket for the kids. :)

Answer 4

There is one equation questions as Number 1.

Let T be the total price.

Let N equal the number of objects.

Let P be the price per object.

Then:

............T

P = -------------   <<<<<  Memorize me.

............N

Or Price per object equal total cost divide by the number of objects.

This is a good equation to memorize.   <<<<<

1) So for the first problem:

The price per pencil = P = $1.92/12 = 16 cents   <<<<<

2) Look at the first equation that I gave you:  P = T / N.

Multiply both sides of the equation by N:     P x N = T

Divide both sides of the equation by P:    N = T / P

N = T / P is the second equation to memorize.   <<<<<

For problem (2):

N = $35.00 / $10.00 = 3.5 tickets.

Since you can't buy a half ticket buy three tickets and keep the $5 change.

Answer 5

P = 1.92/12

T = INT(35/10), where INT means do the calculation and then use only the integer part of the answer,

Answer 6

1.92/12

if 12 cost x amount, then the amount divided by 12 is the cost of 1

35/10 = 2.5 or 2 rounded

How many times does 10 go into 35