Answer:
48%
Step-by-step explanation:
To find the percent increase, we first find the amount of increase:
3.40-2.30 = 1.10
Next we divide this by the original amount, 2.30:
1.10/2.30 = 0.4782608696 ≈ 0.48 = 48%
3×5=15
1km =3minutes
5km=15minutes
the 3rd one im pretty sure