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Question

If 2 is added to each of two given numbers,their ratio becomes 1:2.However,if 4 is subtracted from each of the given numbers,the ratio becomes 5:11.Find the numbers.

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Solution

Let the two numbers be x and y.

Case 1:

According to the given condition,

x+2y+2=12

2x+4=y+2

2xy=2 .... (1)

Case 2:

Again, according to the given condition,​​​​​​​

x4y4=511

11x44=5y20

11x5y=24 .... (2)

Now multiply equation (1) by subtract it from (2), we get

11x5y(10x5y)=24(10)

11x5y10x+5y=24+10

x=34

On putting the value of x in (1), we get

2(34)y=2

y=268

y=70

Answer= 34 and 70


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