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Neko [114]
3 years ago
5

Susan has a balance of $110 in her school lunch account, and she spends $6 per day. Her sister Evelyn has $83 in her lunch accou

nt, and she spends $4 per day for lunch. In how many days will Susan's lunch account balance be less than Evelyn's
Mathematics
1 answer:
Oxana [17]3 years ago
5 0

Answer:

In 2 days  Susan's lunch account balance will be less than Evelyn's

Step-by-step explanation:

Susan has a balance of $ 110  which will be enough for = 110/6= 18  days

Evelyn has a balance $ 83 which will be enough for = 83/4= 20 days

In 2 days  Susan's lunch account balance will be less than Evelyn's

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Answer:

a) 12:45 am

b) 7:30 pm

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Step-by-step explanation:

a) We know that the 24-hour clock has no "am" or "pm" because in a day, there are 24 hours, so "pm" would simply be more than 12 hours.

The 12th hour marks noon, which is "12:00 pm" in 12-hour times. Anything after that would start from 1 and would be marked with a pm.

So 12:45 in 12-hour format would be 12:45 pm because it's passed the noon-mark, which is the 12th hour. Anything after noon would be marked with a "pm."

b) Same thing here: 19:30 has also passed the noon mark, the 12th hour. It would be marked with a "pm."

But there is no "19 'o clock" in 12-hour format (hence the 12-hour 12 hours). So to find that, we know that it has already passed noon. We can subtract to find how many hours it has passed noon:

19 - 12 = 7

So it's the 7th hour.

So it would be 7:30 pm.

c) Because there is no "am" or "pm" in the 24-hour clock, we have to see how many hours past noon it has been.

8:15 pm means it has passed noon by 8 hours and 15 minutes. So we add this to the noon mark (first 12 hours of the day).

12 + 8 = 20

This is our hours. We can attach it to the minutes: 20:15.

d) Midnight in 12-hour terms would be 12:00 am. It would be officially the next day, and it's a reset button.

If it were Saturday today, and it's 11:59 pm, it's still Saturday. But once that clock turns 12:00 pm, it's Sunday.

This means that no time has passed during Sunday yet—it just reset.

So it would be 0:00 because no time has passed officially on Sunday yet.

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3 years ago
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Answer:

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Step-by-step explanation:

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