MAtwo data variable with stepup cost …urgent!!!!!!!!!!!!!!!!!!!!!

I just tried to solve this but I couldn't. I think the numbers are incorrect, however if they are correct, I cannot explain it.
Good luck,
B.

i can solve this problem as...........................1) u typed wrong activity level as 60000 and 72000 but if it is as 6000 and 7200 then i can explain this step by step........................concentrate here...............

1)identify thehighest and lowest activity level .....................high is 7200 and low is 6000


2)now find v.c/unit wid the formula as=cost at high activity level -cost at low activity level and divide this wid...high activity level -low activity level

so the v.c/unit will be showed as..........1104000-960000=144000 and divide this wid this,,,,,,,,,7200-6000=1200/..............144000 divide 1200=120 v.c/unit


t.v.c=v.c/unit x highest or lowest activity level(depends on u .......that u will high or low)i will high..................
t.v.c=120x7200=864000


now f.c=t.c-t.v.c
f.c=(highest cost)110400-864000=240000

so tc is equal to f.c+t.v.c
t.c=240000+864000=1104000

we find these at 7200 activity level but we need to find at 14000

so t.c at 14000:::::::::::::::
t.c=f.c+(v.c/unit x no. of units find)
t.c=240000+ (120 x 14000)
t.c=240000+1680000
t.c=1920000.....................

but if units exceed from 15000 units then v.c/unit will decrease asssss then v.c/unit which is 120 x 10/100==108


now again f.c+(v.c/unit x units find)
t.c=240000+(108 x 14000)
t.=240000+1512000
t.c=1752000



so i explained thanks..............