Machine

Fixed chipper

Grapple loader

Shovel loader

Wheel loader

Index

i

1

2

3

4

Purchase price of machine i (Mill. JPY)

Mi

27.1

9.7

1.0

8.9

Salvage rate of machine i

sali

0.1

0.1

0.1

0.1

Maintenance rate of machine i

mmi

0.5

0.5

0.5

0.5

Depreciation years of machine i

mdi

8

8

8

8

Rate of insurance, interest, and tax

si

0.23

0.23

0.23

0.23