Answer:
210 kilometers
Step-by-step explanation:
First; we are going to divide.
60(hour in minutes) / 20 mins ...to find out what the excess distance the car went.
Which is 1/3 or 0.3333333...
Second; we are going to combine the decimal and the whole number together.
2 hours + 0.333333... hours = 2.3333333...hours
Finally; we are going to multiply
90 (km/h) * 2.33333333
Which equals ...210 kilometers!!
