Let t = # of tricycles; let b = # of bikes.
# of trike wheels is 3t; # of bike wheels is 2b. Total number of wheels is 79, which equals 3t + 2b. t+b = 28, so t=28-b.
Subst. 28-b for t in the first equation:
3(28-b) + 2b = 79. Then 84-3b + 2b = 79, or 5 = b (answer)
There were (28-5) = 23 trikes, 5 bikes, and 28 seats.
Answer:
B.The two holders of back-stage passes whose ages are above 40 make the mean age higher than the median age.
Step-by-step explanation:
i took the test just now
Answer: Thus you found the rate of the slower bus. It is 67 miles per hour.
Then the rate of the faster bus is 67 + 18 = 85 mph.
Step-by-step explanation: