Audrina drank 4 5 liter of water Monday before going jogging. She drank 2 3 liter of water after her jog. How much water did Audrina drink altogether? Write your answer as a mixed number.

Step-by-step explanation:

The computation of the water did Audrina drink altogether is as follows:

Now in a mixed fraction, it would be

Hence, the water did Audrina drink altogether is

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

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b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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