B. False the sides must form the angle and the two sides must be in this position.
X=small number
x+1= second
x+2= third
3x+3=72
3x=69
x=23 smallest number
Distance ran by Tara = 1600 m
Time taken by Tara to ran 1600 m = 5 min 20 seconds
We have to calculate the speed.
Firstly, we will convert the unit of time in one unit.
Time = 5 min 20 seconds
= 5 min +
min (Because 1 min = 60 sec)
= 
=
=
min
Now we will use Distance speed formula which states,
Distance = speed
time
1600 m = speed

speed = 
Speed = 300 m/min
So, the speed of Tara was 300 meter/min.