During the 1st 10 year life of a certain machine the following were spent for its maintenance:

a) P10T each year for the 1st 5 years

b) P15T each year for the next 5 years

c) P20T at the end of 4rd year for overhauling and

d) P25T at the end of the 7th year for overhauling.

If i= 20% compounded quarterly, what was the equivalent uniform annual cost for the 10-year period.