a. The material total variance
Std Qty allowed: 1200 x 15 x 8 = 144000
Actual cost 147500
Total variance 3500 (Unfavorable)
b. The material price variance
Act qty x std price: 19200 x 8 = 153600
Actual cost 147500
Price variance = 6100
c. The materials usage/quantity variance
Std qty allowed - act used x std [rice
(1200 x 15)18000 - 19200 x 8 = 9600 (U)
d. The labour total variance
e. The labour rate variance
f. The labour efficiency (productivity) variance
I hope you can do the rest of the problem