Answer:
Debit Work in process for $15,625
Debit Direct labor time variance for $625
Credit Direct labor rate variance for $650
Credit Wage payable for $15,600
Explanation:
Before preparing the journal, the following calculations are done first:
Wage payable = Actual hours * Actual rate per hour = 1,300 * $12 = $15,600
Direct labor time variance = (Actual hours - Standard hours) * Standard direct labor rate = (1,300 - (1,000 * 1.25)) * $12.50 = $625 Unfavorable
Note: Direct labor time variance is Unfavorable because Actual hours is greater than Standard hours.
Direct labor rate variance = (Actual rate - Standard rate) * Actual hours = ($12 - $12.50) * 1,300 = -$650 Favorable 
Note: Direct labor rate variance if Favorable because Actual rate is lower than the Standard rate. 
Work in process = Wage payable + Absolute value of direct labor rate variance - Direct labor time variance = $15,600 + $650 - $625 = $15,625
The journal entries will now look as follows:
<u>Date           Particulars                                         Debit ($)           Credit ($)   </u>
Mar. 31       Work in process                                  15,625
                   Direct labor time variance                      625
                   Direct labor rate variance                                                 650
                   Wage payable                                                               15,600
<u><em>                   (To record the direct labor in the Assembly Department.)       </em></u>