Two delivery trucks begin driving at the same time, along the same route toward the same destinationOne the trucks, Truck A, driving at a rate of 96 kilometers per hour. The other truck Truck B , its drive 80 kilometers closer to the destination than Truck rate of kilometers hour The driver of Truck A calculates the time at which his truck and the other truck will meet along the route what rate of speed would Truck A need to travel in order for the trucks to meet one hour earlier instead

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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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step-by-step explanation:

the answer is d

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