How do you solve the math problem of time? For example, how much time has elapsed from 8 08 10 19? P

8 a.m. to 10 a.m. is 2 hours, an hour is 60 minutes, and 2 hours is 120 minutes. Since it starts at 8:08, 120-8 = 112 minutes. And because the end time is 10:19, 112 + 19 = 131 minutes.

So it took 131 minutes. That's 2 hours and 11 minutes. Thank you!

Hours minus hours, minutes minus minutes. When the minutes are not enough to subtract, borrow 1 from the hour and add 60 (minutes) to the minute value

Because the minutes and seconds of time are in the base 60 system. For example:

08 minutes is less than 19 minutes, not enough to subtract, then to borrow 1 from the hour, 08 minutes become 68 minutes, and at the same time the hour becomes 09 hours, the formula becomes: 9:68-8:19 = 1:49

All calculations are: quantity x or base. Divide small to large (e.g. seconds to minutes) and vice versa.

8:08-10:19 After 2 hours and 11 minutes, since the conversion of hours to minutes is large to small, the base system of minutes to hours is used in the base system of x, and the base system from minutes to hours is to use the base system of 60. So when converted into minutes, it is 2x60+11=131 minutes.

So it took 2 hours and 11 minutes.

This counts the time period, the beginning is not the end, and the end is not the head.

6 o'clock in the afternoon. 9:30+8:30 18:00, i.e. 6 p.m.

Formula: 9:30 a.m. + 8:30 p.m. = 6 p.m.

((72/60*11)-12)/12*8

72/60*11= 48min3*

If the hour and minute hands coincide 11 times in 12 hours, the time of 1 overlap is 12 11 hours.

The actual time of 12 hours is 72 60 * 11 = hours, that is, 12 hours of slow clocks and slow hours, then 8 hours of slow hours.

Overtime wage 1 hour 3 * (1 + yuan, so the factory should pay Master Li overtime wage yuan on this day.

72-60=12 (minutes) One hour of work is equivalent to 12 extra minutes of work.

12 8 60 = hours) 8 hours more than an hour of drying.

3 yuan) On this day, the factory should pay Master Li an overtime wage.

The 1 (1 1 12) 12 11 hours of the slow clock correspond to 7 6 hours of standard time.

The 8 hours of the slow clock is equivalent to the standard time of 8 12 11 7 6 77 9 hours, and more than 77 9 8 5 9 hours, the excess part should be paid 5 9 (yuan.

Yuan 72min = 6 5h

Factory 8h, reality 48 5h

More than 8 5h, more than an hour round.

8 5 Yuan.

Well, multiple times is the original double.

52x80%x100% = minutes

So 100% speed is minutes.

hours) Answer: A catches up with B God Tachibana Bi needs

A: If you walk in the opposite direction. A and B need the Wood God to meet.