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Zinaida [17]
4 years ago
11

Divide 28 into 2 groups so the ratio is 3 to 4

Mathematics
1 answer:
emmasim [6.3K]4 years ago
8 0

3     4

3     4

3     4

3     4

Left side gets 12.

Right side gets 16.

12+16=28 in total.

When you're thinking of ratios, you have to think of rounds. Let's say I want to distribute apples... In Round 1, I'm going to give myself 1 apple and give you 2 apples. After Round 1, three apples have been distributed in total. Now, if I repeat the same pattern of distribution 1:2, after Round 2 I should have 2 apples whilst you have 4. After Round 2 a total of 6 apples would have been distributed.If the ratio is 3 to 4 - imagine there are 7 groups total, and one person gets 3 of the 7 and the other person gets 4 of the 7.

____________________________________________
If 28 is divided into 7 groups, each group has 4 cans.

One person gets 3 groups = 4*3 = 12 cans
The other gets 4 groups = 4*4* = 16 cans

This way is easier for me to do, but go with whatever works for you :)
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Is (–5, 0.5) a solution of this system? x – 4y = –7, 0.2x + 2y = 0 Substitute (–5, 0.5) into x – 4y = –7 to get . Substitute (–5
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<u>ANSWER: </u>

(-5, 0.5) is the solution of given equation x – 4y = –7, 0.2x + 2y = 0.

<u>SOLUTION: </u>

Given, two equations are x – 4y = -7 → (1)

And 0.2x + 2y = 0 → (2)

We have to find whether (-5, 0.5) is a solution of given system or not.

For that, we have to solve the given two equations.  

Before solving let us multiply equation (2) with 2 in order to get y terms cancelled. Such that, our  process becomes easy.  

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So, the solution for given equations is (-5, 0.5).

Hence (-5, 0.5) is the solution of given equations.  

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