Question

Emma is training for a 10-kilometer race. She wants to beat her last 10-kilometer time, which was 1 hour 10 minutes. Emma has already run for 55 minutes. Which inequality can be used to find how much longer she can run and still beat her previous time? (1 hr = 60 min)
70>t-55
70t-55

Answer 1

@Vocaloid

Answer 2

@ZoeyBiocth16

Answer 3

For this case, the first thing that we must take into account is the following conversion:
1 hr = 60 min
The time of the first race in minutes is:
1 hour 10 minutes = 60 minutes + 10 minutes
1 hour 10 minutes = 70 minutes
Now we define one variable:
x: time remaining to beat the previous time
The inequation that models the problem is:
x + 55 < 70
Answer:
An inequality that can be used to find how much longer she can run and still beat her previous time is:
x + 55 < 70