Question

Hannah, Yu, and Becky went to buy groceries together. All three of them bought pasta, noodles, and split peas.

•Hannah bought 3 packs of pasta, 10 packs of noodles, and 2 packs of split peas.

•Yu bought 5 packs of pasta, 12 packs of noodles, and 1 pack of split peas.

•Becky bought 3 packs of pasta, 15 packs of noodles, and 2 packs of split peas.

How much was each item?
Hannah, Yu, and Becky spent $8.41, $9.42, and $9.66 respectively on these items.

Answer 1

If a = unit cost of pasta
b = unit cost of noodles
c = unit cost of split peas
then we need to write an equation for how much each person bought and how much they paid.
Hannah bought 3 pasta, 10 noodles, and 2 split peas. and spent 8.41
3a+10b+2c=8.41
You have to do this for all three people. You will have three equations and three unknowns and should be able to solve for all three.