SOLUTION: The rocket is set to launch in 3.75 hours...the launch time is 11:20 am What time is it now? What is the algebra equation?

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Question 984844: The rocket is set to launch in 3.75 hours...the launch time is 11:20 am
What time is it now? What is the algebra equation?
Found 2 solutions by josmiceli, MathLover1:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +t+ = present time in hrs
+t+%2B+3+%2B+3%2F4+=+11+%2B+1%2F3+
+t+=+11+%2B+1%2F3+-+3+-+3%2F4+
+t+=+8+%2B+4%2F12+-+9%2F12+
+t+=+8+-+5%2F12+
+t+=+7+%2B+7%2F12+
------------------
+%287%2F12+%29%2A60+=+35+
The present time is 7:35

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
11%3A20am=11.3333h
let's time now be t%5Bn%5D
if the rocket is set to launch in t=3.75h (or t=3h45min) the launch time is t%5BL%5D=11%3A20+am, then
a time now is t%5Bn%5D%2B3.75h=11.3333h
t%5Bn%5D=11.3333h-3.75h
t%5Bn%5D=7.58h
t%5Bn%5D=7h35min
or
highlight%28t%5Bn%5D=7%3A35%29am
check:
7h35min
+
3h45min
-----------------------------
10h80min=> since 80min=1h%2B20min, we have
11h20min which is the launch time