... 15, 980 26,930Cash flow (53,400) (25,220) (90) 540 2,020 (7,430)Opening balance 60,000 6,600 ( 18, 620) ( 18, 710) ( 18, 170) (16,150)Closing balance 6,600 ( 18, 620) ( 18, 710) ( 18, 170) (16,150) (23, 580 )Notes:1 ... inventories (Note 1) 40 48 40Production (Note 2) 188 232 1962 28 280 236Inventories sold (Note 3) ( 180 ) (240) (200)Closing inventories 48 40 36(b) The raw materials inventories budget for the two months ... (A)Materials price variance (2 ,83 0 × 3) − 8, 770 ( 280 ) (A)Materials usage variance [(5,400 × 0.5) − 2 ,83 0] × £3 (390) (A)Labour rate variance (650 × £10) − 6 ,88 5 ( 385 ) (A)Labour efficiency variance...