Exercise $8-16($Algo$)$ Computing and analyzing direct labor variances LO P$3$

Javon Company set standards of $3$ hours of direct labor per unit at a rate of $$16\mathrm{.}40$ per hour. During October, the company actually uses $20,500$ hours of direct labor at a $$340,300$ total cost to produce $7,000$ units. In November, the company uses $24,500$ hours of direct labor at a $$407,925$ total cost to produce $7,400$ units of product.

AH $=$ Actual Hours

SH $=$ Standard Hours

AR $=$ Actual Rate

SR $=$ Standard Rate

$(1)$ Compute the direct labor rate variance, the direct labor efficiency variance, and the total direct labor variance for each of these two months.

$(2)$ Javon investigates variances of more than $5\%$ of actual direct labor cost. Which direct labor variances will the company investigate further?