Question

if x:y =1:2 find the value of (2x+3y):(x+4y)​

Answer 1

Answer:

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If x:y=1:2, find the value of (2x+3y):(x+4y).

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Solution

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Correct option is D)

x:y=1:2 means

y

x

=

2

1

Now, (2x+3y):(x+4y)=

(x+4y)

(2x+3y)

=

y

x+4y

y

2x+3y

=

y

x

+4

2

y

x

+3

Putting

y

x

=12, we get,

=

2

1

+4

2⋅

2

1

+3

=

9

8

Thus, the required ratio is 8:9.

Answer 2

Answer:

(3×1+3×2):(1+4×2)

(3+6):(1+8)

(9):(9)

9÷9

1