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mina [271]
3 years ago
10

seventy percent of the 100 students in a middle school cafeteria bought their lunch. Some of the students that bought their lunc

h leave the cafeteria to attend an assembly. Now only 60% of the remaining students bought their lunch. How many of the students are remaining in the cafeteria?
Mathematics
1 answer:
MAVERICK [17]3 years ago
6 0

100% -60% is equal to 40%

so 40% of the students remained in the cafeteria

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mr banks left work at 5 15 P.M it took him 1 1/4 hours to drive home . at what time did mr banks drive home? worth 22 points
Zepler [3.9K]
Using the information that you've provided, I would say that Mr. Banks drove home at 5:15, but if you're asking what time he arrived home that would be at 6:30. :))
7 0
3 years ago
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A man is 25 years old. His mother is exactly three times his age. How old will the man’s mother be when he is 35 years old? ​
klio [65]

Answer:

85

Step-by-step explanation:

Note the mother is 3x his age when he is 25 years old. Multiply 3 with 25:

3 x 25 = 75

Ten years pass (35 - 25 = 10). Add 10 to 75:

75 + 10 = 85

When the man is 35 years old, his mother will be 85 years old.

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4 0
3 years ago
If i have a 20 dollar bill and a candy is 4 how many can i buy
8090 [49]

Answer:

a candy is $4

you have a $20 bill

1 candy = 4

2 candies = 8

3 candies = 12

4 candies = 16

5 candies = 20

you can buy 5 candies for $20.

4 0
3 years ago
Read 2 more answers
Find the surface area. Round to the nearest tenth.
Anton [14]

Answer:

66.4 in^2

Step-by-step explanation:

Surface area is defined as the area around the surface of a 3-dimensional solid. The shape we are given here is a triangular prism with a square base. This means it contains one square and 4 triangles on the surface. To find the surface area, we just need to find the areas of all 5 surface shapes and add them up. We have been given that the square has a side length of 4 inches, meaning the area is 4^2 or 16. The area of a triangle is (1/2)base*height. The base length is 4 inches and the height is 6.3, and (1/2)*4*6.3 is 12.6. Note that, since there are four triangles, we have to multiply this value by 4 (12.6*4 = 50.4). Now we have the area of the square and the area of all the triangles put together, so we can just add them up:

16 + 50.4 = 66.4

8 0
2 years ago
An orchard has 651 orange trees. The number of rows exceeds the number of trees per row by 10. How many trees are there in a row
natima [27]

Answer:

The number of trees in each row is  21.

Step-by-step explanation:

Let us assume the number of trees in each row  = m

So, the number of rows in the orchard = Number of trees in each row + 10

or, total number of trees in each row = (10 +m)

Now, Total number of Trees = Number of Rows x Number of trees in 1 row

⇒ 651  = m (m + 10)

651 = m^2 + 10m\\\implies  m^2 + 10m - 651 =0\\or,   m^2 + 31m  21m - 651 =0\\or, m(m +31) -21(m+31) =0\\\implies (m +31) (m-21) = 0

⇒ (m +31) = 0, or (m-21) = 0

⇒ m= -31, or m = 21

Now, as m = The number of trees in each row, so m ≠ -31

So, m =  21

Hence, the number of trees in each row is m = 21.

8 0
3 years ago
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