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NishantG · 07-21-2008, 08:11 AM

formula

[120*(2^-at)]+60
After 10 minutes
[120/(2^10a)]+60 Since this is equal to 120 2^10a should be equal to 2 so a has to be 1/10

At t=30

120/(2^30a) + 60

Substituting value of a we get answer as 75

07-21-2008, 08:11 AM	#6 (permalink)
NishantG Within my grasp! Join Date: May 2008 Posts: 347	formula [120*(2^-at)]+60 After 10 minutes [120/(2^10a)]+60 Since this is equal to 120 2^10a should be equal to 2 so a has to be 1/10 At t=30 120/(2^30a) + 60 Substituting value of a we get answer as 75