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Do you have a normal distribution chart in front of you?

yes

So 60 is going to be that center little bit, excuse my terrible drawing.
|dw:1435375646432:dw|

So what's the probability that it will be less that 70 minutes

Add all those percentages from 70% to 0.

I got 69.1% is the correct?

I got 69.2

Is the answer 34.1?

Yes!

|dw:1435378336477:dw|

I got -3/2 is the correct?

Yeah, that's right.