For manufacturing a certain quantity of product, the standard and actual figures relating to materials are as follows:

Materials

Standard

Actual

Qty (kgs)

Price

Qty (kgs)

Price

A

90

Rs. 4

140

Rs. 3.80

B

60

Rs. 5

60

Rs. 5.20

150

200

Less: Loss

30

34

120

166

Calculate material-yield variance.