Please help me. 6th grade math

Divide distance by speed to get time.

Speed and time are inversely proportional. As speed increases, time decreases.

Distance = speed × time   So distance is the the constant of variation.

Step-by-step explanation:  Divide distance by speed to get time.

180km÷50km/h = 3.6h  by Car

180km÷45km/h = 4h by Bus

180km÷40km/h = 4.5h by Truck

180km÷25km/h = 7,2h by Bicycle

Car: 3.6

Bus: 4

Truck: 4.5

Bicycle: 7.2

Inversely proportional

The constant of variation is 180

Step-by-step explanation:

Car: 180 ÷ 50 = 3.6

Bus: 180 ÷ 45 = 4

Truck: 180 ÷ 40 = 4.5

Bicycle: 180 ÷ 25 = 7.2

It's inversely proportional because as speed increases, time decreases.

180 is the only consistent thing when calculating the time it would take to travel.

what i would say the best answer is a. 40.5