Erin wants to purchase 3 cds for 10$each. she has $20. how much more money dose she need? explain how you know

answer: she needs another $10

step-by-step explanation:

1 cd= $10

2 cd's= $20

3 cd"s=30 total for 3 cd's

$30-$20 (amount she has)=$10

answer:

she needs $10 more

step-by-step explanation:

1 cd= $10

2 cd's= $20

3 cd"s=30 total for 3 cd's

$30-$20 (amount she has)=$10

possible explanation: i know this because 1 cd costs $10 and he buys 3 cd's so 10x3= 30. erin will pay $30 total, but he only has $20. 30 is less than(< ) 20. so he will need $10 dollars more.

300pi

step-by-step explanation: