Question

Which strategy can be used to solve this problem?

Myrna bought some pens and some binders. Pens cost $2 each and binders cost $3 each. Myrna spent $14 for 6 items.

How many pens did Myrna buy?

A.
Translate into a number sentence.
Let n represent the number of pens Myrna bought.
(2 × n) + (3 × 6) = 14

B.
Make a table.

Myrna's Purchases
Number 1 2 3 4 5 6
Pens $2 $4 $6 $8 $10 $12
Binders $3 $6 $9 $12 $15 $18

C.
Guess and test.
Guess that Myrna bought 3 pens and 3 binders. Figure out what she would have spent on the 6 items. If this doesn't equal

Answer 1

@flower2468

Answer 2

If this doesn't equal $14, try 2 pens and 4 binders. Figure out what she would have spent. Is this more or less than $14? Revise your guess, and test your answer again.

Answer 3

so you when with c?

Answer 4

option B is a chart

Answer 5

so you have to pick one and then do it?

Answer 6

yes

Answer 7

okay, so and you pick C

Answer 8

yes

Answer 9

I think it is c

Answer 10

alright, then you can start guessing numbers like you guess 3pens=6$ and 3binders=9$ then you add 6+9=15 and that is too high and then you try another pair of numbers

Answer 11

c and d

Answer 12

what do you mean? you can pick two?

Answer 13

I'm not sure....

Answer 14

lets just do C

Answer 15

ok

Answer 16

I think c would be corrrect?

Answer 17

Is that right?

Answer 18

I think c, but in case I am wrong get someone else to check

Answer 19

ok

Answer 20

is that you?

Answer 21

your picture