Mandy runs 4 km in 18 minutes if she planes to run in a 15 km race how long will it take her to complete the race
4/18 = 15/x
Cross multiply and solve for x.
ariana runs up 4 flights of stairs and then back down 4 flights of stairs.Does this situation represent additive inverse
To find out how long it will take Mandy to complete the 15 km race, we can use the information given about her running speed.
First, we need to find her running speed in km/minute. We can do this by dividing the distance she runs (4 km) by the time it takes her to run it (18 minutes):
Running speed = Distance / Time
Running speed = 4 km / 18 minutes
Running speed ≈ 0.2222 km/minute
Now that we know her running speed, we can calculate the time it will take her to run the 15 km race. We'll use the same formula, but this time the distance is 15 km:
Time = Distance / Running speed
Time = 15 km / 0.2222 km/minute
To divide by a fraction, we can multiply by its reciprocal. So, we can rewrite the formula as:
Time = 15 km * (1 / 0.2222 km)
Time ≈ 67.51 minutes
So, it will take Mandy approximately 67.51 minutes to complete the 15 km race.