Calculate the following: a) The Prepaid Insurance account had a $735 debit balance at the beginning of the current year. During the year, $825 of insurance premiums were paid. The balance in the prepaid insurance account at year-end was $600. What was the insurance expense for the year?. b) The Supplies account had a $400 debit balance at the beginning of the current year. The income statement for the year showed $625 of supplies expense. The balance of the supplies account at year-end was $375. How much was purchased in supplies during the year?