Question

what per cent is 2 minutes 10 seconds of an hour ?

Answer 1

first convert all terms into same unit.
2 mins 10 secs= 60+60+10= 130 secs

1 hour= 60x60= 3600 secs

Let 130 secs be y% of 3600.

> y% of 3600= 130
>y   x  3600= 130   
100
> y= 130 x 100
           3600
> y= 3.61

=3.61%

Hope it helps.

Answer 2

2 minutes 10 seconds = ( 60 * 2 ) + 10  seconds
                                     = 120 + 10 seconds
                                     = 130 seconds.
1 hour = 60 minutes = (60*60) seconds
                                 = 3600 seconds.
let 130 seconds be x % of 3600 seconds.
thus , the equation we get is , 
x % of 3600 = 130 
( x/100) * 3600 = 130
x = (130 * 100) / 3600 
= 3.61 %