Bryan completed a 100-meter race in 11.74 seconds. Luis completed the same race in 11.69 seconds. What was the difference between their times, expressed as a fraction of a second?

of a second

Step-by-step explanation:

We can convert each time into fractions.

11.74 is the same thing as

and 11.69 is the same thing as .

We know that 11 - 11 = 0, so we can focus on the fractions for now.

Let's subtract from .

.

We can now simplify by dividing both the numerator and denominator by 5.

.

Hope this helped!

50-38=12

step-by-step explanation:

6 adults and 9 children went.

a + c = 15

12a + 9c = 153

12(6) + 9(9) = 153

72 + 81 = 153