In a class, there are 20 students of 12 years, 19 students of 14 years and 15 students of 16 years. What will be
What will be the modal age of the class ?
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answer is because 4×10=40

and 98×4= is 392

40,392

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

16 would be your answer