Answer: 16 minutes and 40 seconds
Step-by-step explanation:
1.) Divide 10 minutes by 3 laps in order to find out how long it takes her to run a single lap. (it ends up being 3 minutes and 20 seconds per lap)
2.) Multiply this number by 5, you get 16 minutes and 40 seconds.
NOTE: remember that you’re using intervals of 60 (seconds in a minute) rather than intervals of 100.
Answer:
C. -9
Step-by-step explanation:
The pattern is clearly subtracting 4 each time (or adding -4).
-5 - 4 = -9
You multiply 86 by 42.5 because each board is 42.5 and there are 86 boards.
Answer:
87.5 percent
Step-by-step explanation:
when you have to increase a number by 50 percent you are multiplying it by 1.5
later when you increase the number by 25 percent you multiply it by 1.25
you can multiply 1.5 by 1.25 to get your answer
1.5 * 1.25 is 1.875
so the percent increase is 87.5 percent
