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laurentsupreme
01.07.2019 •
Mathematics
Answer both questions and show all your work. ! : ) 1) there are 1000 rabbits and chickens on a farm and together they have 3150 legs. how many rabbits and how many chickens are there on the farm? 2) mike has 4 times as many stamps as andrew. if mike gives andrew 8 stamps, he will have twice as many stamps as andrew. how many stamps does each boy have?
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Ответ:
(1) let "r" denote number of rabbits, "c" number of chickens
Set up the equations:
There are 575 rabbits and 425 chickens
(2) m - number of Mike's stamps, a - number of Andrew's stamps.
Set up equations:
Mike has 48 stamps. Andrew has 12 stamps.
Ответ:
Given:
Consider the below table attached with this question.
Every square meter of ceiling requires 10.75 tiles.
To find:
The missing values in the table.
Solution:
We have,
1 square meter of ceiling = 10.75 tiles. ...(i)
Therefore, the number of tiles corresponding to 1 square meter of ceiling is 10.75.
Multiply both sides by 10.
10×1 square meter of ceiling = 10×10.75 tiles.
10 square meter of ceiling = 107.5 tiles.
Therefore, the number of tiles corresponding to 10 square meter of ceiling is 107.5.
Divide both sides by 10.75 in (i).
Multiply both sides by 100.
On approximating the value, we get
9.3 square meter of ceiling = 100 tiles.
Therefore, the square meters of ceiling corresponding to 100 tiles is about 9.3.
Multiply both sides by a in (i).
a×1 square meter of ceiling = a×10.75 tiles.
a square meter of ceiling = 10.75a tiles.
Therefore, the number of tiles corresponding to a square meter of ceiling is 10.75a.