Let the Blaise runs for time "t" to complete the race
so the total distance he moved is given by

Now Issac runs for time t = "t - 2*60"
because it took rest for 2 minutes

now it is given that Blaise wins by 10 m distance




now the distance moved by Blaise is given by

a boulder can change due to erosion and weathering. it can change shape and sometimes color, possibly.
The 'Rite of Spring' was composed by Igor Stravinsky.