Answer:
The journal entries should be as follows:
Day 1, you purchase the materials (8 pallets x $200 x 80%)
- Dr Materials Inventory account 1,280
- Cr Accounts Payable account 1,280
Day 31, you pay the first installment (= $1,280 / 3)
- Dr Accounts Payable account 426.67
- Cr Cash account 426.67
Day 61, you pay the second installment (= $853.33 - $426.66)
- Dr Accounts Payable account 426.67
- Cr Cash account 426.67
Day 91, you pay the third installment
- Dr Accounts Payable account 426.66
- Cr Cash account 426.66