Maria and kim left town at 9: 00 am and traveled the same route in separate cars. kim drove 3 h at a steady speed, then slowed down 15km/h for 3 more hours. maria averaged 5 km/h more than kim’s original speed for the entire trip and arrived at their destination at 2 pm. what was kim’s original speed?

a

step-by-step explanation:

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step-by-step explanation:

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

it has to have an angle of 90 degrees