Question

WORD PROBLEM!

Answer 1

1.Sara is selling cookies and brownies as a fundraiser for the school band. She charges $2.25 for two cookies and one brownie. She charges $5.75 for four cookies and three brownies. How much does Sara charge per cookie? How much per brownie.
A. $0.50 per cookie; $1.25 per brownie~
B. $0.75 per cookie; $1.50 per brownie
C. $0.25 per cookie; $1.00 per brownie
D. $1.00 per cookie; $1.00 per brownie
2.Mike and Kim invest $12,000 in equipment to print yearbooks for schools. Each yearbook Costs $5.00 to print and sells for $15.00. How many yearbooks must they sell before their business breaks even?
a. 800 yearbooks~
b. 1,200 yearbooks
c. 2,400 yearbooks
d. 1,800 yearbooks

Answer 2

if its 2.25 for two cookies and one brownie then that means the cookies have to be 0.50 and the brownie is 1.25
0.50*2=1
1.25*1=1.25
outcome=2.25

Answer 3

am I right?

Answer 4

On the first question: Out of the given answers, you can plug them in and find that none work except that one, so yes that's the correct answer.

Answer 5

Oh okay. For number two i said 800 yearbooks because they have 12,000 for equipment to sell yearbooks. and it takes about $20 to sell the year book after printing so if you subtract 5 for the cost of printing then you have 15. and 15*800=12,000 am i right?

Answer 6

Think of it this way: every yearbook they sell costs them $5 to make, but when they sell it they are paid $15. How much do they make per yearbook?

Answer 7

$10.00

Answer 8

Right, so how many books would they have to sell to break even (or make the initial investment amount) of $12,000?

Answer 9

b.1200

Answer 10

Yup, good job :)

Answer 11

do you mind helping me with two more they r my last ;)

Answer 12

Sure.

Answer 13

ok
.A baker has a bag of flour that is 11% whole wheat and a bag of flor that is 63% whole wheat. How many cups of each type does the baker need to make 12 cups of a flour mixture that is 50% whole wheat?
a. 3 cups of 11% flour and 9 cups of the 63% flour
b. 9 cups of the 11% flour and 3 cups of the 63% flour
c. 3 cups of 11% flour and 3 cups of the 63% flour
d. 9 cups of the 11% flour an 9 cups of the 63% flour
4.A science teacher has a supply of 50% sugar solution and a supply of 80% sugar solution. How much of each solution should the teacher mix together to get 105 mL of 60% sugar solution for an experiment?
a. 70 mL of the 50% solution and 35 mL of the 80% solution.
b. 35 mL of the 50% solution and 70 mL of the 80%
c. 70 mL of the 50% solution and 70 mL of the 80% solution.
d. 35 mL of the 50% solution and 35 mL of the 80% solution

Answer 14

Do you know how to set the first problem up as a system of equations?

Answer 15

@greendaygxrl14 Just so you know... it would be better to make separate posts for each. It is unfair for @Alphabet_Sam to be helping you with so many questions and not be able to get that many medals. :)

Answer 16

U are right next time i will do that ;) sorry @Alphabet_Sam

Answer 17

Oh that's alright, helping is more of a reward than the medals :D

Answer 18

a+b=12 0.11A+0.63B=6

Answer 19

Almost, the second one should equal .5 as that is the concentration of flour you're looking for. Then you can just solve the system of equations and you'll have the answer.

Answer 20

i get b=9

Answer 21

so i think the awnser is b or A it cant be c or d

Answer 22

we only are making 12 cups of flour, so d) can't be correct, because that would make 18 cups
Similarly, c) can't be correct, because that only makes 6 cups of flour. I would take another look at choices a and b...

Answer 23

Right, good logic. Now the answer that B (the 63% mixture) is the higher amount also makes sense because the final mixture you're looking for is much closer to 63% than 50%. Good work.

Answer 24

Sorry, it's closer to 63% than 11%, I'm getting tired haha :)

Answer 25

Haha thats okay

Answer 26

And the last one is nearly the exact same method to solve, so you should have no problem.

Answer 27

yea i think the last one is 70 ML of the 50% solution and 35 ML of the 80% solution

Answer 28

if x mL of 50%, then

.50x + .80(105-x) = .60*105

Answer 29

Looks good to me. Nice work, you've got these down.

Answer 30

so you agree its 70 ML of the 50% solution and 35 ML of the 80% solution

Answer 31

That's what I got.

Answer 32

Alright thanks a lot!! i wish i could give you a ton of medals but... i cant!

Answer 33

That's alright! It was a pleasure working with you :)