Step-by-step explanation:
The adjusting entry is as follows:
Supplies expense A/c Dr $370
To Supplies A/c $370
(Being supplies account is adjusted)
The Supplies expense is calculated below:
= Beginning Supplies balance + purchase an additional office supplies - supplies on hand
= $500 + $3,500 - $950
= $3,050
Simply we debited the supplies expense account and credited the supplies account for $3,050