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Rzqust [24]
3 years ago
8

A husband and wife celebrate their birthdays on the same day of the month, but in different months. Every year, their birthdays

fall on the same day of the week. If the husband's birthday is in March and the wife's birthday is later in the year, find the month of the wife's birthday.

Mathematics
2 answers:
Nimfa-mama [501]3 years ago
6 0

Answer:

It would be in November.

Step-by-step explanation:

If you look at a calendar of this year (2020), the first of March is on a Sunday. November 1st is also on a Sunday.

Illusion [34]3 years ago
4 0
Well, let's assume March 1st is Sunday. April 1st is Wednesday, May 1st is Saturday, June 1st is Tuesday, July 1st is Thursday, August 1st is Friday, September 1st is Sunday. So, her birthday must be in September.
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<h3>Answer:   60 minutes</h3>

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Explanation:

Let's find the LCM of 4 and 5, which are the first two items of the list.

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The smallest item in each list is 20, so the LCM of 4 and 5 is 20.

We can replace the "4,5" in the list "4,5,12,15" with "20". So our new list would be "20,12,15".

We then repeat the process of finding the LCM of the first two items

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LCM of 20 and 12 is 60.

The list "20,12,15" condenses to "60,15".

Repeat this process of finding the LCM once more and you'll find the overall LCM is 60.

Therefore, the LCM of the entire set {4,5,12,15} is 60. This is the smallest multiple shared by all four values. Interestingly enough, the outer values pair up to multiply to 60, and so do the inner values.

4*15 = 60

5*12 = 60

The bells ring together every <u>60 minutes</u>

In other words, all of the bells ring together at the same time every hour (perhaps at the top of every hour; eg at 7:00 pm and at 8:00 pm, etc).

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