The standard material cost for a normal mix of one tonne Chemical S is based on:

Chemical

Usage (kg)

Price Per kg Rs.

P

240

6

Q

400

12

R

640

10

During a month, 6.25 tonnes of Chemical S were produced from:

Chemical

Usage (tones)

Cost (Rs.)

P

1.6

11,200

Q

2.4

30,000

R

4.5

47,250

Calculate the Material Variances.