A cup of green tea contains 35 mg of caffeine the average teen can aluminate approximately 12.5% of caffeine from their system per hour estimate the amount of caffeine in a teenagers body three hours after drinking a cup of green tea

amount of caffeine after three hours = 13.125 mg

Step-by-step explanation:

caffeine content n the tea = 35mg

amount ingested by teens per hour= 12.5% of caffeine = 12.5% of 35mg

= 12.5/100 × 35mg

amount ingested by teens per hour = 0.125 × 35 = 4.375 mg

∴ amount ingested by teens after three hours = 4.375 × 3 = 13.125 mg

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles