Question

a company ordered $400 worth of muffins. bran muffins cost $2 each and blueberry muffins cost $4 each. if the company ordered twice as many blueberry muffins as bran muffins, how many muffins were ordered in total?

Answer 1

we need a variable for the number of bran muffins
what do you pick?

Answer 2

x & y

Answer 3

we only need one

Answer 4

x

Answer 5

so lets call the number of bran muffins x
that makes the number of blueberry muffins twice that, or \(2x\)

Answer 6

since the bran muffins are $2 each,
\(x\) of them cost \(2x\) dollars

Answer 7

got it

Answer 8

and since the blueberry ones are $4 each, \(2x\) of them cost \(4\times 2x=8x\) dollars

Answer 9

the total amount of money is $400 so you know \[2x+8x=400\] and you can solve that for \(x\)

Answer 10

you good from there?